The Paris Las Vegas sports book on the Strip was closed Saturday and its ticket writers suspended pending an investigation that employees were underreporting their income from tips, officials said.

"We became aware of a possible underreporting of income by Paris sports book employees on Thursday," said David Strow, spokesman for Harrah's Entertainment, which owns and operates Paris.

Strow said the Gaming Control Board and the Internal Revenue Service were informed immediately of the allegations as per regulations.

"Pending an investigation by those agencies, all of the employees (ticket writers) of the Paris sports book have been suspended," he said.

Strow said Sunday that, as far as he knew, no one had been arrested in connection with the investigation.

The ticket writers were accused of underreporting their tips for tax purposes by as much as one-third, a gaming industry source said.

Sports book ticket writers pool their tips, as do dealers and other casino personnel.

The sports book was reopened and was accepting wagers for Sunday's professional football games as employees from other Harrah's properties were brought in, Strow said.

While the Paris sports book was closed, bettors were able to place wagers on games at the Bally's sports book, also owned by Harrah's, Strow said. Harrah's Entertainment operates Bally's and Paris under one gaming license. The casinos are attached by an enclosed promenade between the properties.

Paris opened in 1999. Harrah's acquired the two casinos as part of its $9 billion buyout of Caesars Entertainment, which was completed in June 2005.