A manhunt was on Saturday night for a carjacking suspect after he stole a vehicle from an unsuspecting woman while she was pumping gas at a Circle K station in Tewksbury, according to police.

The stolen vehicle, a red Mazda with New Jersey license plates, was located in Lowell late Saturday night, Tewksbury Police Lt. Thomas Casey said.

K-9 units were conducting an active search for the suspect on foot, he said.

The carjacking is still under investigation, Casey said, but detectives have obtained the gas station’s surveillance video for review.

This is story is developing, and will be updated when more information becomes available.


Alex Schroeder can be reached at alexander.schroeder@globe.com. Follow him on Twitter @alexjschroeder.