A post-incident investigation found a shotgun, three magazines, a hatchet, gasoline, four smoke grenades and a bag of consumer fireworks. According to the police, there is no evidence of the gun being stolen.
A credit card was also recovered from the scene, and it was claimed that the card was used to rent a U-hall. A police report said the shooter had the keys to the vehicle. In the late afternoon of April 12, 2022, investigators discovered the vehicle just five miles from the Gravesend, Brooklyn, subway station. They launched an investigation to see if the vehicle had any connection with the suspect.