In the evening of November 13, 1991, a shooting at Tischer Auto dealership in the 8200 block of Automobile Boulevard in Silver Spring left two custodians critically wounded. Maura Portillo, 39, died at the scene; 30-year-old Jose Escobar of Hyattsville was taken to Suburban Hospital and died of his gunshot wounds on November 21, 1991, just over a week after the attack.

Montgomery County police opened an investigation into the killings. At the time of initial reports no arrests had been announced, no suspects had been publicly identified, and the motive for the assault had not been determined.

If anyone remembers activity near the dealership on November 13, 1991, or has information about either victim or the shooting, please come forward.