NEW YORK, April 4 (UPI) -- Ticketmaster Entertainment Inc. says U.S. and state officials are investigating its business relationships with concert ticket resellers.

LOS ANGELES, Feb. 10 (UPI) -- Two U.S. entertainment giants, Ticketmaster and Live Nation, announced an agreement to join forces Tuesday in an all-stock merger worth $2.5 billion.

TORONTO, Feb. 9 (UPI) -- Giant ticket broker Ticketmaster Monday was slammed with a $500 million class-action suit accusing it of violating Canada's anti-scalping laws, lawyers said.

WASHINGTON, Sept. 9 (UPI) -- Ticket scalpers, often shady characters who prowl outside arenas and stadiums, are being replaced by officially sanctioned Web-based resellers.

BEVERLY HILLS, Calif., Aug. 23 (UPI) -- Negotiations between Ticketmaster and U.S. concert promoter Live Nation have broken down, opening the door for Live Nation to go into the ticketing business.

WEST HOLLYWOOD, Calif., Feb. 8 (UPI) -- Ticketmaster, the West Hollywood, Calif., event ticket seller, teamed with iTunes to offer free downloads with concert tickets bought on Ticketmaster.com.

BEIJING, Oct. 27 (UPI) -- California-based Ticketmaster, the world's leading seller of event tickets, is expanding into China, the IAC/InterActiveCorp unit said Friday.

LOS ANGELES, Aug. 29 (UPI) -- More than 1,000 tickets for Barbra Streisand's upcoming U.S. tour have been invalidated by Ticketmaster after being found to have been fraudulently purchased. A release from Ticketmaster said that the company had invalidated the tickets when it was discov

BARCELONA, Spain, July 24 (UPI) -- Ticketmaster, the world's biggest ticketing group, is buying Tick Tack Ticket, a Spanish company.

LOS ANGELES, July 5 (UPI) -- Jimmy Buffett and the Coral Reefer Band's U.S. concert tour was the "most requested event" in the first half of 2006, Ticketmaster said.