A woman who drove a car into a Salem printing shop has been arrested and faces a charge of vehicular assault.

Kieu Thi Nguyen, 39, drove her Honda into the Sir Speedy store at 382 South Broadway around 10 a.m. on Oct. 16, police said.

“We have ruled out mechanical defects as the cause of the collision,” said Salem Deputy Police Chief Bill Ganley. “I don’t think it was an intentional act. I believe it was operator error.”

A 27-year-old employee suffered serious but non-threatening injuries. She was treated at Holy Family Hospital in Methuen, Mass.

Nguyen, who lives at 89 S. Broadway, in Lawrence, Mass., turned herself in at the Salem Police Station on Oct. 21 after a warrant was issued for her arrest.

She will be arraigned in Salem District Court on Nov. 26.

A store surveillance video showed Nguyen’s car coming into the store without any apparent braking, according to police.