LAMONT WALLACE was ambushed outside a corner store after buying cigarettes. Armed muggers jumped Jonathan Bell and Rolando Lugo-Almonte. And Christopher Foster was dragged into a car at gunpoint in Roxborough and dumped dead in Germantown.
These cases represent just a fraction of the more than 90 homicides in 2011 that remain unsolved. City police are seeking the public's help to crack them:
* Christopher Foster, 18, was a Roxborough High School senior who went with a friend to grab a sandwich on Jan. 19. On the way, two black men pulled up in a green Cadillac, waved a shotgun and forced Foster inside. A short time later, police found Foster's body with a single gunshot to his torso - and facial injuries suggesting he'd been beaten - on Woodlawn Street near Morris.
* Lamont Wallace, 21, worked at the stadiums and hopped a subway home after a game on March 30. Just before 1 a.m., he stopped in a convenience store on Marvine Street near Parrish in North Philly for cigarettes. Chatting on the phone with his cousin as he left the store, he said: "I think I'm going to have a problem. . . . Here we go." The cousin told police he heard a struggle, Wallace pleading for his life, then gunshots.
* Porfirio and Juana Nunez and Lina Sanchez. Porfirio Nunez was about to close his corner store, Lorena's Grocery, at 50th and Parrish streets in West Philly, on Sept. 6 when two men burst in and repeatedly shot him, his wife, Juana, and her sister, Lina, during a robbery. This case carries a $25,000 reward for tips leading to the capture and conviction of the killers.
* Rolando Lugo-Almonte, 23, had locked up his LaMecca Food Mart, at 15th and Wharton streets in South Philly, at 8:30 p.m. Nov. 23 when two men in hoodies announced a robbery. The robbers shot Lugo-Almonte repeatedly in the chest and stomach and fled on foot. Lugo-Almonte died 90 minutes later at the Hospital of the University of Pennsylvania.