NEWPORT BEACH, Calif. - Kobe Bryant called 911 the day before he surrendered to police on a sexual assault accusation and medics later treated an unidentified female at his home, officials said yesterday.

The Los Angeles Lakers star hung up the phone without talking, but a dispatcher called back, speaking to three people, including Bryant, before sending police and paramedics, Sgt. Steve Shulman said. Medics arrived at 12:40 a.m. on July 3 and stayed 23 minutes.

"The call that he made initially was for medical assistance at the residence, and the medical assistance was not for him," Shulman said.

Bryant made the call the day before he returned to Colorado to surrender to police after being accused of sexually assaulting a 19-year-old woman at an exclusive spa on June 30. He is free on $25,000 bail and will be arraigned Wednesday.

Shortly after he called 911, medics treated a female at the house, but did not need to take her to the hospital, said Vickie Cleary of the Newport Beach Fire Department.

It was unclear whether the medics treated a woman or child. Bryant and his wife, Vanessa, had a baby girl in January.

Paramedics were summoned to the house for a similar emergency on March 5, Cleary said. During that call, paramedics took a woman to the hospital.