Police asked for the public’s help Wednesday in finding a woman who used the credit card of Bethesda man who has been missing for more than two weeks.

John Patrick Donohoe, 36, was reported missing on Dec. 14, and was last seen by family members at his Auburn Avenue home at about 10:30 a.m. on Dec. 13, Montgomery County Police said in a statement.

On Dec. 22, the statement said, a woman used Donohoe’s credit card to buy $700 worth of items at a beauty supply store and other retailers in the Hyattsville area.

Investigators from the Montgomery County Police Department have been working the case since Dec. 13, said Detective Frank Colbert, one of two detectives now assigned full-time to the search.

“We’re really looking at all possibilities,” Colbert said. “Any information would be helpful.”

He said investigators are concerned that someone used Donohoe’s credit card, and used it so far from where Donohoe was last seen. He does not know how the woman got the card.

Investigators also are concerned that the vehicle Donohoe was driving, a black, 2011 Chevrolet Equinox with Maryland tag 2AK8853, hasn’t been located.

“One of the suspicious parts is the vehicle hasn’t popped up anywhere,” Colbert said.

The investigation has indicated that Donohoe may have been in Fauquier County after he went missing, Colbert said.

Police released surveillance video of the woman, and asked anyone with information about Donohoe’s disappearance or the woman’s identity to contact them at 240-773-5070.