Police investigators are still searching for the man who stabbed the clerk at USA Gas on Silverado Trail on Tuesday night.

The 45-year-old woman clerk was stabbed four times, twice in the chest and twice in the hand.

She was treated at Queen of the Valley Hospital and released, Napa Police Sgt. Don Honey said.

Honey said the chest wounds were minor. “However the cuts to her hand were much more serious. Her finger was cut to the bone,” Honey said.

The victim does not know her assailant.

Around 8:15 p.m., Tuesday, the man came into the store of the gas station. He and the victim were the only ones inside the business, Honey said.

“She thought he was going to buy a cup of coffee. She went toward the back of the store to close the door to the office. The man followed and attacked her. He gave no warning of any type and there was no provocation,” Honey said.

Honey said the man did not say anything to the woman nor did he demand money or anything else.

The woman was knocked to the ground and began fighting back, yelling, screaming and kicking, he said.

The man dropped the knife, which police recovered, and fled the store. No vehicle was seen, Honey said.

The victim told police the same man had been at the station about an hour earlier and asked to use the bathroom.

“She said he spoke limited English. She pointed to the bathroom outside and the man left,” Honey said.

The man is described as Hispanic, between 18 and 22, about 5-feet-6, 140 pounds, slender build, black hair, brown eyes with a mustache. He was wearing a black-hooded sweatshirt with writing on the front and blue denim pants.

Anyone with information is asked to call Napa police at 253-4451.