NEW YORK (TIP): A gun-toting trio forced an NYPD cop into the backseat of her car Thursday in Brooklyn and made off with her NYPD shield when she managed to escape, law enforcement sources said. The cop, who wasn’t armed, identified herself as a police officer, but the thieves didn’t care, sources said. The 36 year old officer, who was off duty, says armed suspects grabbed her after she started her car on E. 99th St. near Foster Ave. Thursday, November 21 morning and forced her into the backseat before she managed to slip out and past a third thief. The three allegedly stole her purse, which contained her NYPD shield and ID. After a few terrifying moments, the officer managed to slip out of the car and run past a third suspect, leaving her handbag containing her NYPD shield and ID behind, officials said. The suspects grabbed the purse, abandoned her car and fled in a yellow taxi reported stolen the night before, police sources said. Cops found the cab parked on the sidewalk at Newport St. and Van Sinderen Ave. in East New York a few hours later. The thieves remained at large, officials said.