Authorities have released new details in a case of animal cruelty in which at least 11 gulls were killed when they were lured to a parking lot in suburban Maryland and run over with a vehicle.

The killings happened Jan. 4 in the parking lot of a Dollar Tree store in Laurel on Fort Meade Road. Laurel police said the suspect used popcorn to lure the gulls to the parking lot and then was seen “intentionally running over” the birds with a vehicle, killing them.

On Thursday, Laurel police put out a description of the vehicle they say was involved in the incident and a surveillance photo of the suspect.

Police said they think the person was in a newer-design Chevrolet Equinox that was blue-gray and had a Maryland license plate. The vehicle also had a roof rack.

The suspect is described as a black man in his 50s or 60s who was last seen wearing a burgundy Old Navy sweater, a dark-green jacket, black sweatpants, white sneakers and a beige beanie-style hat.

A $5,000 reward is being offered for information that leads to an arrest in the case. Audrey Barnes, a spokeswoman for the city of Laurel, has called the killing of the birds a “senseless act of animal cruelty.”

“It takes a cruel, dangerous person to coax gulls over with the intention of violently killing them,” Colleen O’Brien, a vice president of People for the Ethical Treatment of Animals, said in a statement after the incident.