PITTSBURGH — A woman who collapsed in a suburban police station and later died had been picked up by police for walking along a busy highway less than an hour after being stopped for driving without a license, a police chief said.

East Pittsburgh police Chief Lori Payne said Anita White, 46, of East McKeesport, was driving without a license when she was pulled over about 1:45 a.m. Sunday.

White refused a police offer to give her a ride home because her car was being towed. White was picked up about 45 minutes later when an officer saw her walking too close to traffic on a busy highway, Payne said.

White argued with the officer and complained of chest pains after she was taken into custody, Payne said, so an officer called for an ambulance to meet them at the Turtle Creek police station just over a mile away.

The officer took White to Turtle Creek because that station dispatches East Pittsburgh officers and has holding cells that can be used for those in custody, the chief said.

"She collapsed in lockup while sitting down," Payne said. "She sort of fell forward and hit her head. Our officers had no physical altercations with her, no pepper spray, no Taser, or anything like that."

White died about 3:45 a.m. at Forbes Regional Hospital in Monroeville, according to the Allegheny County Medical Examiner.

An autopsy Sunday was inconclusive pending toxicology and other test results. The case has been turned over to county homicide detectives, who did not immediately return a call for comment Monday.

Chief Payne said White told officers she was on dialysis and had heart problems, but said White wasn't "in distress," when police called for the ambulance.