Mar 31, 2016 8:42 PM by NBC News
A state trooper and a gunman are dead after an "active shooter" situation at a Greyhound bus station in Virginia, Thursday afternoon, state police said.
Two civilians were also injured during the shooting, which took place around 2:45 p.m. ET Thursday afternoon at the bus station in Richmond, Virginia, State Police Spokeswoman Corinne Geller said.
Officials said the shooting happened near the end of a counter-drug training mission for state police. Part of the training involves approaching civilians and talking to them.
When a state trooper in uniform walked up to one man at the entrance to the bus station, the man pulled a gun and shot the officer at close range, Geller said.
Two officers standing nearby returned fire and fatally struck the gunman, who died after being taken to a hospital, she said.
The two injured civilians were shot after the trooper, said Geller, who noted that a gun was recovered at the scene.
Officials told NBC News that the gunman appears to have been mentally disturbed.