LONDON (AP) — A driver who plowed through the wall of a Liverpool classroom shortly before the start of school Monday was arrested on suspicion of driving under the influence of drugs.

A passenger in the car had a minor injury but no one else was hurt, Merseyside police said.

The Mercedes could be seen through a gaping hole in the white brick wall of Beacon Church of England Primary School. It came to rest in the middle of a classroom near a chalkboard.

There were no children in the area at the time, police said, but parents said it was a close call.

“Ten more minutes and there would have been a lot more kids in there,” Dan Sudbury, told the BBC. “They’ve had a lucky escape.”

A 39-year-old woman was arrested on suspicion of driving under the influence of drugs and careless driving.

The school was closed for the day and was being inspected for structural damage.