The suspected gunman — a 38-year-old man — entered a business at Riverside Tech Park in the northeast of the city, and opened fire in or near it, striking two men, Frederick Police Chief Jason Lando told reporters.
The suspect then drove to Fort Detrick, about 10 minutes away, where “personnel on the base” fatally shot him, Lando said.
The men injured at the technology park were in critical condition, and were flown by helicopter to a hospital, Lando said
Lando said he didn’t know why the suspect opened fire at the business or subsequently went to Fort Detrick, or what led base personnel to shoot him.
“We have two different scenes. … We have confirmed there (was) only one (assailant), (and) the public is no longer at risk,” Lando said.
The names of the suspect and the injured men weren’t immediately released.
Frederick is about a 50-mile drive northwest of Washington, DC.
This developing story will be updated.