Two Maryland State Police troopers were injured early Saturday morning when a vehicle hit the back of a patrol car stopped at the scene of a robbery investigation in Joppa.

The driver of the vehicle was also injured.


The troopers are identified as Trooper Zachary Shelley, who has been a trooper for two and one-half years, and Trooper First Class David Stanley, a nine-year veteran of the Maryland State Police. Both troopers are assigned to road patrol duties at the Bel Air Barrack.

Shelley was taken to the Maryland Shock Trauma Center in Baltimore, where he was treated and released Saturday. Stanley was taken to Upper Chesapeake Medical Center in Bel Air, where he was treated and released the same day.

The driver of the Volkswagen Beetle that struck the patrol car is identified as Trina Emory, 32, of Edgewood. She was also taken to Shock Trauma and later released.

Shortly before 4 a.m. Saturday, troopers from the Bel Air Barrack were on the scene of a reported armed robbery at the Royal Farms store on Route 152 at Franklinville Road, according to a State Police news release. Shelley's emergency lights were activated on his unmarked patrol car, which he had moved into the southbound lane of Route 152 to protect crime scene evidence.

A preliminary investigation indicates Emory was headed south on Route 152 and failed to go around the stopped patrol car with its emergency lights on, according to the news release. The Volkswagen hit the rear of the patrol car Shelley was sitting in.

Stanley was near the vehicles when the crash occurred. He was injured when he jumped down an embankment to get out of the way of the Volkswagen after it hit the patrol car, according to the release.

The cause of the crash remains under investigation. Charges are pending.

The robbery the troopers were investigating was reported shortly after 2:30 a.m. Saturday. Two men, described as African American, one wearing a dark colored poncho and one a green poncho, entered the store and committed the robbery, according to the release. One robber is believed to have displayed a handgun.

They also sprayed something in the store that was originally thought to have possibly been a chemical agent, but was found to have been some type of non-toxic, "oily" substance, Tfc. Michael Cornbrooks of the MSP Criminal Enforcement Division said.

The store employee reported the robbers left the store with cigarettes and an undetermined amount of cash.

No one was injured during the robbery. State Police criminal investigators are continuing the investigation.

No arrests had been made and no suspects identified as of Tuesday morning, MSP spokesman Greg Shipley said.