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John Warren Gibson Jr., who is accused of murdering his girlfriend in January, was charged Feb. 14 for his alleged involvement in the Jan. 29 robbery of a Shell gas station in Lusby.

Gibson, 25, of Lusby has been charged with armed robbery, first-degree assault and theft less than $1,000. He is being held without bond at the Calvert County Detention Center. Gibson is also being held without bond at the detention center after he was arrested Feb. 1 and charged with murder. After allegedly admitting to stabbing 27-year-old Amanda Lynn Foster of Lusby with a kitchen knife during an argument about dishes Jan. 12, Gibson led police to a wooded area south of Leonardtown in St. Mary’s County on Feb. 1, where police said in a press release they found Foster’s body wrapped in a blanket in a trash can in the woods.

During an interview in which Gibson was being questioned about his girlfriend’s murder, he allegedly admitted to robbing a Shell station cashier at knife point, according to court records.

At 9:24 p.m. Jan. 29, the cashier called the police and said he had been robbed, according to charging documents. Calvert County Sheriff’s Office deputies and Sr. Trooper K. Greggs of the Maryland State Police Prince Frederick barrack responded to the scene and set up a perimeter.

The victim said a white man with gray hair and a big nose, who was wearing jeans and a bandana covering the lower half of his face, came inside the store, which was confirmed by surveillance video, police said in court papers. The surveillance video shows the suspect entering the store wearing what appeared to be a gray hooded sweatshirt with the hood over his head, jeans and a white bandana or hospital mask covering the lower part of his face, charging documents state.

The man allegedly said, “Give me all your money,” pulled out a black, 12-inch kitchen knife and put the knife to the victim’s stomach, charging documents state. The suspect followed the victim around the counter where the victim opened the cash register and handed the suspect about $150. The suspect then ran, heading south on H.G. Trueman Road, according to charging documents. The suspect walked south through a wooded area toward Jake and Al’s Restaurant, police said. No suspect vehicle was identified.

The victim said the suspect was possibly in the store the previous day at about the same time. A K-9 track was conducted with negative results.

Gibson, according to charging documents, was arrested Feb. 1 “on unrelated charges.” After he was read his Miranda Rights, which he waived, Gibson allegedly admitted to committing the armed robbery at the Shell station, charging documents state.

Gibson told police he went to the gas station by himself, threatened the cashier with a knife and took $147 in cash. Gibson knew the Shell station was in an isolated area, police said, and knew the cashier was always in the store by himself. He told police he robbed the gas station with the intent of getting enough money to buy pills to overdose, according to court records.