The line of cars followed behind two unmarked military vehicles.

They will always patrol in unmarked vehicles, that cannot be identified at first glance.

He could see two police cars trailing at least four unmarked vehicles.

"And tell him that we need an unmarked vehicle with Israeli plates."

Police cars and at least two unmarked vehicles were positioned just beyond the gate.

Call in one of our unmarked vehicles to replace the patrol car, am I clear?

This is an unmarked vehicle and we could spot him.

The Service also employs a variety of unmarked vehicles to supplement its operations.

Two police cars sat in the driveway near the house, along with a few other unmarked vehicles.

"We monitor that road 24 hours a day, 7 days a week, with marked and unmarked vehicles," he said.