A U.S. Navy medic shot and critically injured two people at a business park in Frederick, Maryland, on Tuesday, authorities said. The suspected gunman, 38-year-old Fantahun Girma Woldesenbet, was later shot and killed at the U.S. Army base Fort Detrick.

The shooter went into a business at Riverside Tech Park, causing people inside to run to safety, Police Chief Jason Lando told reporters Tuesday. After that shooting, he said, the suspect drove about 10 minutes to Fort Detrick, where he was killed by military personnel.

“The public is no longer at risk,” Lando said. “There’s no further cause for alarm in the Frederick community.”

Police received a call for an active shooter Tuesday morning at the business park. When officers arrived, they found two adult males had been shot and were in critical condition. The victims were air-lifted to a nearby hospital for treatment.

The FBI, ATF Baltimore and Maryland State Police are assisting the investigation.