FREMONT -- A man who robbed a woman of cash at an ATM on Thursday remained on the loose, and police released surveillance photos Friday in an attempt to find him.

The robbery occurred about 6:45 a.m. at the Bank of America-Beacon branch located at 39300 Fremont Blvd., police said. A woman was at the ATM when the man approached her, showed her a silver gun that was in his pocket and threatened to shoot her if she tried to escape, police said.

The man demanded the cash she'd already withdrawn from the machine, then forced her to make two additional withdrawals, police said. When the man received what he wanted, he threw her car keys in the bushes and left in a newer-model red Toyota with Utah license plates.

The woman was not injured.

Police described the suspect as a black male, between 20 and 30 years old, approximately 5 feet 11 inches tall with a thin build. He was clean-shaven, police said.

Anyone with information or who recognizes the man or car is urged to call or email Detective Craig Gaches at 510-790-6951, or Cgaches@fremont.gov. Anonymous tips can be sent visiting www.fremontpolice.org/tip.

Contact Rick Hurd at 925-945-4789 and follow him at Twitter.com/3rdERH.