Laker guard Kobe Bryant is free on bail after turning himself in to police on suspicion of felony sexual assault at a resort hotel near Vail, Colo., Eagle County Sheriff Joe Hoy said Sunday night.

Bryant surrendered to the Eagle County Sheriff's Detention Facility on Friday. He was booked, posted $25,000 bail and released. He has yet to be formally charged and an arraignment has not been scheduled, authorities said.

An unidentified woman told police Tuesday that Bryant had sexually assaulted her June 30, according to the county sheriff's office. After a three-day investigation that included interviews with several people, including Bryant, and a review of physical evidence, a judge issued a warrant for Bryant's arrest.

Hoy declined to provide more details. The arrest file was sealed, he said, because of the nature of the case and out of concern for the alleged victim. In Colorado law, felony sexual assault has a wide scope, from coerced touching to rape.

"We don't want things to get out of hand before everything is put into place," Hoy said in a telephone interview.

He added that Bryant was "very cooperative" during the investigation and since. Bryant, who could not be reached for comment, told one team official that the charges were "bogus."