A 36-year-old Gorham woman missing for six days was found safe and unharmed by Portland police Wednesday night.

Katharine “Katy” Kinney was last seen leaving Maine Medical Center about 11 a.m. Thursday, police said. Friends and family say that she had been dropped off at the hospital emergency room about 9 a.m. by a relative of her boyfriend, but left two hours later without a cellphone or money. They had not heard from her until the police called them Wednesday night to tell them she’d been found.

A police spokesman reached Wednesday night said he didn’t have details about where she had been found or her current condition.

“We would like to thank everyone who spread her picture and story on social media during the last 24 hours,” the police said by email Wednesday. “It produced several valuable calls to the detectives working on this case.”

Longtime friend Geoffrey Starrett, who met Kinney a decade ago as a co-worker, had been helping the family look for her. He said he spent Tuesday searching the Western Promenade and handing out fliers with Kinney’s picture. In a phone interview before she was found, Starrett worried that mental health or substance use issues may have been a factor in her disappearance.

A Portland police detective has been assigned to the case, and officers were asking the hospital for additional security footage, Starrett said. They hoped businesses in the area with street-facing cameras would review footage for possible information about where Kinney might have gone when she left the hospital.

At the time of her disappearance, Kinney was wearing a pink fleece jacket, a tank top, black leggings with a pink stripe and slippers. She wears glasses or contact lenses and hearing aids.

Kinney lived in Florida after living in Maine for years, Starrett said. She returned to the Greater Portland area about a year ago, and according to police, was living in Gorham, although Starrett said he believes she was moving between Gorham, Windham and Portland.