Updated 2:45 p.m.: A vehicle grazed and injured a Maryland state trooper on I-270 in Rockville on Tuesday night, officials said.

The injury was not considered life-threatening. The trooper was taken to Shady Grove Hospital and released, Ron Snyder, a state police spokesman, said.

The trooper was conducting a traffic stop on the side of the northbound lanes of the highway between Route 28 and Shady Grove Road when a car came too close and swiped the trooper at about 7:45 p.m. The car grazed the trooper’s hand.

The driver of the vehicle that hit the trooper was cited for failure to change lanes adjacent to an emergency vehicle, according to Snyder. He identified the driver as Maclear Jacoby Jr., 91, of Gaithersburg.

In December, a fire marshal and an FBI special agent were killed after a car struck them when they were standing of the shoulder of I-270 in Rockville. The fire marshal had stopped to assist the special agent after his SUV crashed.