Pinnacle Entertainment and Ameristar Casinos Receive Hart-Scott-Rodino Request for Additional Information

Pinnacle Entertainment and Ameristar Casinos Receive Hart-Scott-Rodino Request
for Additional Information

LAS VEGAS, Feb. 12, 2013 (GLOBE NEWSWIRE) -- Pinnacle Entertainment, Inc.
(NYSE:PNK) and Ameristar Casinos, Inc. (Nasdaq:ASCA) announced today that on
February 11, 2013 they received a request for additional information and
documentary materials (a "Second Request") from the Federal Trade Commission
("FTC") regarding Pinnacle's proposed acquisition of Ameristar. The
information request was issued under notification requirements of the
Hart-Scott-Rodino Antitrust Improvements Act of 1976 ("HSR Act").

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The effect of the Second Request is to extend the waiting period imposed by
the HSR Act until 30 days after each company has substantially complied with
the Second Request, unless that period is extended voluntarily by the
companies or terminated sooner by the FTC. The companies intend to
expeditiously respond to the information request and to continue to work
cooperatively with the FTC in connection with this review. Completion of the
transaction remains subject to the expiration or termination of the waiting
period under the HSR Act, customary closing conditions, approval by
Ameristar's stockholders, and required regulatory approvals. Pinnacle and
Ameristar continue to expect the transaction to close during the second or
third quarter of 2013.

About Pinnacle Entertainment

Pinnacle Entertainment, Inc. owns and operates seven casinos, located in
Louisiana, Missouri, and Indiana, and a racetrack in Ohio. In addition,
Pinnacle is redeveloping River Downs in Cincinnati, Ohio into a gaming
entertainment facility, owns a 23% equity stake in Asian Coast Development
(Canada) Ltd. (ACDL), an international development and real estate company
currently developing Vietnam's first large-scale integrated resort on the Ho
Tram Strip, and holds a majority interest in the racing license owner, as well
as a management contract, for Retama Park Racetrack outside of San Antonio,
Texas.

On December 20, 2012, Pinnacle agreed to acquire Ameristar Casinos, Inc. in an
all cash transaction valued at $26.50 per Ameristar share or total
consideration of $2.8 billion including assumed debt. Ameristar owns and
operates casino facilities in St. Charles near St. Louis, Mo.; Kansas City,
Mo.; Council Bluffs, Iowa; Black Hawk, Colo.; Vicksburg, Miss.; East Chicago,
Ind.; and the Jackpot properties in Jackpot, Nev.

The Pinnacle Entertainment, Inc. logo is available at
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About Ameristar Casinos

Ameristar Casinos is an innovative casino gaming company featuring the newest
and most popular slot machines. Ameristar's 7,200 dedicated team members pride
themselves on delivering consistently friendly and appreciative service to
their guests. Ameristar continuously strives to increase the loyalty of its
guests through the quality of its slot machines, table games, hotel, dining
and other leisure offerings. Ameristar's eight casino hotel properties
primarily serve guests from Colorado, Idaho, Illinois, Indiana, Iowa, Kansas,
Louisiana, Mississippi, Missouri, Nebraska and Nevada. Ameristar has been a
public company since 1993, and its stock is traded on the NASDAQ Global Select
Market. Ameristar generates more than $1.1 billion in net revenues annually.

The Ameristar Casinos, Inc. Logo is available at
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Important Information Regarding Forward-Looking Statements

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of
the Private Securities Litigation Reform Act of 1995. These forward-looking
statements are based on Pinnacle's and Ameristar's current expectations and
are subject to uncertainty and changes in circumstances. These forward-looking
statements include, among others, statements regarding the expected synergies
and benefits of a potential combination of Pinnacle and Ameristar, including
the expected accretive effect of the merger on Pinnacle's financial results
and profile (e.g., free cash flow, earnings per share and Consolidated
Adjusted EBITDA); the anticipated benefits of geographic diversity that would
result from the merger and the expected results of Ameristar's gaming
properties; expectations about future business plans, prospective performance
and opportunities; required regulatory approvals; the expected timing of the
completion of the transaction; and the anticipated financing of the
transaction. These forward-looking statements may be identified by the use of
words such as "expect," "anticipate," "believe," "estimate," "potential,"
"should," "could," "would," "will," or similar words intended to identify
information that is not historical in nature. The inclusion of such statements
should not be regarded as a representation that such plans, estimates or
expectations will be achieved. There is no assurance that the potential
transaction will be consummated, and there are a number of risks and
uncertainties that could cause actual results to differ materially from the
forward-looking statements made herein. These risks and uncertainties include
(a) the timing to consummate a potential transaction between Pinnacle and
Ameristar; (b) the ability and timing to obtain required regulatory approvals
(including approval from gaming regulators) and satisfy or waive other closing
conditions; (c) the ability to obtain the approval of Ameristar's
stockholders; (d) the possibility that the merger does not close when expected
or at all, or that the companies may be required to modify aspects of the
merger to achieve regulatory approval; (e) Pinnacle's ability to realize the
synergies contemplated by a potential transaction; (f) Pinnacle's ability to
promptly and effectively integrate the business of Pinnacle and Ameristar; (g)
the requirement to satisfy closing conditions to the merger as set forth in
the merger agreement, including expiration of the waiting period under the
Hart-Scott-Rodino Antitrust Improvements Act of 1976; (h) uncertainties in the
global economy and credit markets and its potential impact on Pinnacle's
ability to finance the transaction; (i) the outcome of any legal proceedings
that may be instituted in connection with the transaction; (j) the ability to
retain certain key employees of Ameristar; (k) that there may be a material
adverse change of Pinnacle or Ameristar, or the respective businesses of
Pinnacle or Ameristar may suffer as a result of uncertainty surrounding the
transaction; (l) Pinnacle's ability to obtain financing on the terms expected,
or at all; and (m) the risk factors disclosed in Pinnacle's most recent Annual
Report on Form 10-K/A, which Pinnacle filed with the Securities and Exchange
Commission on May 16, 2012 and the risk factors disclosed in Ameristar's most
recent Annual Report on Form 10-K, which Ameristar filed with the Securities
and Exchange Commission on February 28, 2012 and in all reports on Forms 10-K,
10-Q and 8-K filed with the Securities and Exchange Commission by Pinnacle and
Ameristar subsequent to the filing of their respective Forms 10-K for the year
ended December 31, 2011. Forward-looking statements reflect Pinnacle's and
Ameristar's management's analysis as of the date of this report. Pinnacle and
Ameristar do not undertake to revise these statements to reflect subsequent
developments, except as required under the federal securities laws. Readers
are cautioned not to place undue reliance on any of these forward-looking
statements.

Additional Information and Where to Find It

In connection with the proposed merger, Ameristar plans to file a definitive
proxy statement with the SEC and mail the proxy statement to its stockholders.
INVESTORS AND STOCKHOLDERS ARE URGED TO READ THE PROXY STATEMENT AND OTHER
PROXY MATERIALS WHEN THEY BECOME AVAILABLE AS THEY WILL CONTAIN IMPORTANT
INFORMATION ABOUT PINNACLE, AMERISTAR, THE PROPOSED MERGER AND RELATED
MATTERS. The proxy statement, as well as other filings containing information
about Pinnacle and Ameristar will be available, free of charge, from the SEC's
web site (www.sec.gov). Pinnacle's SEC filings in connection with the
transaction also may be obtained, free of charge, from Pinnacle's website
(www.pnkinc.com) under the tab "Investor Relations" and then under the heading
"SEC Filings," or by directing a request to Pinnacle, 8918 Spanish Ridge Ave.,
Las Vegas, Nevada, 89148, Attention: Investor Relations or (702) 541-7777.
Ameristar's SEC filings in connection with the transaction also may be
obtained, free of charge, from Ameristar's website (www.ameristar.com) under
the tab "About Us," "Investor Relations" and then under the heading "Ameristar
Casinos SEC Reports & Filings," or by directing a request to Ameristar, 3773
Howard Hughes Parkway, Suite 490 South, Las Vegas, Nevada, 89169, Attention:
Investor Relations or (702) 567-7000.

Participants in the Merger Solicitation

Pinnacle and Ameristar and their respective directors and executive officers
and other persons may be deemed to be participants in the solicitation of
proxies in connection with the proposed merger. Information about Pinnacle's
directors and executive officers is included in Pinnacle's Annual Report on
Form 10-K/A for the year ended December 31, 2011, filed with the SEC on May
16, 2012 and the proxy statement for Pinnacle's 2012 Annual Meeting of
Stockholders, filed with the SEC on April 9, 2012. Information about
Ameristar's directors and executive officers is included in Ameristar's Annual
Report on Form 10-K for the year ended December 31, 2011, filed with the SEC
on February 28, 2012 and the proxy statement for Ameristar's 2012 Annual
Meeting of Stockholders, filed with the SEC on April 30, 2012. Additional
information regarding these persons and their interests in the merger will be
included in the definitive proxy statement relating to the merger when it is
filed with the SEC. These documents can be obtained free of charge from the
sources indicated above.

CONTACT: Pinnacle Entertainment Contacts:
        
         Investor Relations
         Vincent J. Zahn, CFA
         Vice President, Finance and Investor Relations
         702/541-7777 or investors@pnkmail.com
        
         Media Relations
         Kerry Andersen
         Director, Public Relations
         337/395-7631 or kandersen@pnkmail.com
        
         Ameristar Casinos Contacts:
        
         Investor Relations
         Thomas Steinbauer
         Senior Vice President, Chief Financial Officer
         (702) 567-7030 or tom.steinbauer@ameristar.com
        
         Media Relations
         Roxann M. Kinkade, APR
         Director of Communications
         (816) 414-7007 or roxann.kinkade@ameristar.com

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