Law enforcement in Washington, D.C. is seeking a suspect who they believe either detonated or threw explosive devices at three different businesses in the nation’s capital within the span of minutes Sunday morning.

The attacks happened just 15 minutes apart on the northeast side of the district and began at 4:30 a.m. when a suspect detonated an explosive device on the sidewalk outside of Truist Bank located on Washington Place, according to a media release from the Metropolitan Police Department. Six minutes later, another explosive device detonated on the sidewalk in front of the doors at the Nike store on H Street, police said.

The final attack occurred at 4:45 a.m. when a suspect threw a “Molotov cocktail style object” at the Safeway grocery store located on 40^th Street, police said.

South Carolina house fire:6 dead, 1 critical in South Carolina House Fire, man arrested on attempted murder charge

Police said that all three businesses were damaged in the attacks, though it was unclear to what extent. All the businesses were closed when the explosions occurred, and police said no one was injured.

Following each attack, a person could be seen on security footage fleeing the scene in a vehicle. Police have described the suspect’s vehicle as a champagne-colored or gold Acura TL sedan with a Maryland license plate number of 17971CK.

Washington, D.C. police and the Bureau of Alcohol, Tobacco, Firearms and Explosives are offering a $20,000 reward for information leading to an arrest and a conviction.

New Hampshire crash:34 people injured after driver crashes into busy New Hampshire restaurant

Eric Lagatta covers breaking and trending news for USA TODAY. Reach him at [email protected] and follow him on Twitter @EricLagatta.