Olympic gold medalist Michael Phelps was not injured when the SUV he was driving collided with another car in Baltimore, but the other driver was taken to a hospital.
Police said on Friday they had no updates on the woman driving the other car. She was described as "shaken up" and taken on Thursday night to the hospital as a precaution.
Cindy Rivers, a spokeswoman for the University of Maryland R Adams Cowley Shock Trauma Center, said she could not provide any information without the woman's name, which has not been released.
Phelps has been interviewed by police and alcohol was not a factor, police spokesman Anthony Guglielmi said. Two passengers in Phelps' Cadillac Escalade were not injured, he added.
There is a traffic light at the intersection, but when asked for details about how the crash occurred and whether anyone was at fault, police said they were still investigating. No citations were issued, Guglielmi said, noting a report might be released later on Friday.
Phelps' SUV had a crumpled hood and was on a tow truck. The other car, a gray Honda Accord, had considerable damage on the front driver side.
Phelps won eight gold medals at the Beijing Olympics. Most recently, he earned five golds and a silver over eight days this month at the world swimming championships.
Phelps has had brushes with the law in the past. USA Swimming suspended him earlier this year for three months after a British tabloid published a photo of him using a marijuana pipe. The Richland County, SC, sheriff's office investigated the photo but found there wasn't enough evidence to charge Phelps.
In an earlier incident, Phelps pleaded guilty to driving while impaired shortly after he won six golds and two bronzes at the 2004 Athens Olympics. A Maryland state trooper had pulled him over after Phelps ran a stop sign. He was sentenced to 18 months' probation.
John Cadigan, a senior coach with the North Baltimore Aquatic Club, which is based at the swim center operated by Phelps and his coach, said he hadn't talked to Phelps about the crash Friday and didn't know anything more than what was in the media.
Cadigan said Phelps is not scheduled to be back in practice there until next week, but didn't say whether he would be at the club on Friday.