The Minnesota State Patrol is looking for tips to find a driver who fired five to seven shots at a tow truck on Interstate 35E in St. Paul early Tuesday. At least one bullet hit the rear driver’s door, but no injuries were reported.

The motive is under investigation, though the State Patrol does not believe it to be road rage. The 23-year-old tow truck driver from Richfield reported that he did not know the suspect and had no interaction with him before the run-in, said Lt. Tiffani Nielson, State Patrol spokeswoman.

The incident began as the tow truck driver was stopped at a stoplight on Wheelock Parkway heading onto southbound I-35E in St. Paul. The other man got out of his minivan, approached the tow truck and started yelling at the driver, Nielson said.

The suspect “tried to argue with him, but the tow driver, based on his statement, ignored that and got on the freeway,” she said.

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Increased enforcement of seat belt laws in effect from Friday to Sept. 30 “In between Wheelock and University Avenue, he felt his vehicle get shot five to seven times,” Nielson said. The tow truck driver left the highway, stopped by Regions Hospital and called police.

Troopers found evidence that his vehicle was hit by at least one bullet. The drivers were alone in their vehicles at the time the shots were fired, Nielson said.

The suspect was driving a white 2000s Dodge or Chrysler minivan. He is described as black, in his mid-20s, about 5 feet 8 inches tall, with shoulder-length dreadlocks. Anyone with information is asked to call the State Patrol at 651-582-1509.

The State Patrol continues to investigate an unrelated instance of a motorist shooting at another vehicle in White Bear Lake in March, Nielson said Tuesday. That case began on westbound Interstate 694 and East County Line Road/Geneva Avenue North as road rage between two drivers, the State Patrol has said. The vehicles continued west and as they exited at White Bear Avenue, one motorist fired a shot at the other’s vehicle, shattering a back window.

Later the same day, authorities found the vehicle and driver sought in connection with the incident but made no arrests.