Toronto police are looking for a man who carjacked a taxicab driver at gunpoint and took him on a frightening ride early Monday morning.

Police said the ordeal began at about 3:30 a.m. when a man refused to pay for food at a gas station at Carlaw Avenue and Lake Shore Boulevard.

In the parking lot, the man pulled a gun on a cab driver and forced him into the backseat of his taxi before hopping into the driver's seat.

The suspect drove off with the cabbie in the backseat, got into a collision at Lake Shore Boulevard and Bay Street and then ran away from the crash scene, police said.

The cabbie wasn't injured but he was robbed of money.

In their search for the suspect, police set up a perimeter bordered by Queens Quay, Queen Street, Yonge Street and University Avenue, but officers were unable to locate the carjacker.

The suspect is white, in his 20s, was wearing a white jacket, blue jeans and sunglasses, police said.

Anyone with information is asked to call police or Crime Stoppers.