CORAL SPRINGS, Fla. -

A woman who had been sexually assaulted was found in a burning medical office building in Coral Springs on Monday evening, police said.

Firefighters were called to a burning building in the 9700 block of Northwest 33rd Street at 5:38 p.m. When they arrived, they found an unconscious woman in one of the suites inside the building.

The firefighters took the woman outside, and she was treated for smoke inhalation. She was taken to Broward Health Coral Springs in serious condition, police said.

Coral Springs police said they found out that at about 5:20 p.m., a man went into the first-floor suite, which held a neurology office, and asked the female employee for prescription drugs. When she said there were none in the office, police said, the man attacked her, sexually assaulted her and choked her unconscious.

The woman was still hospitalized Tuesday afternoon.

Coral Springs police said the woman did not know the attacker, and that the attack was random.

The assailant is a man in his mid- to late 20s who is about 5 feet 11 inches tall and has a thin build, dark hair, dark eyes and groomed eyebrows, Coral Springs police said. He was wearing a dark T-shirt and blue jeans.

Officials are working to determine the cause of the fire. Police said firefighters said it did not appear that any accelerants were used.

"I think it's a horrendous fact," said property manager Gary Caplan. "Nobody should be doing such a thing. I appreciate your involvement, and I would appreciate if you would allow the public to know that we at Central Medical Plaza would like this individual caught."

Anyone with information is asked to call Coral Springs police.