Officer Carlton Hipps died Thursday after being shot in the head during an attempted robbery in North Philadelphia . Wilson exchanged gunfire with two suspects after the gunmen entered a video game store and announced a robbery . Two brothers , Ramone Williams , 26 , and Robert Wilson III , 30 , charged in the fatal shooting . Williams had two prior arrests , while Hipps had six arrests and had been out on parole since 2009 . Wilson , an eight-year veteran on the force , was buying a video game for his 8-year-old son for getting good grades when robbery occurred . AK-47 was recovered during a search warrant at one of the suspects ' home .
Officer Robert Wilson III died Thursday after being shot in the head during an attempted robbery in North Philadelphia . Wilson exchanged gunfire with two suspects after the gunmen entered a video game store and announced a robbery . Two brothers , Ramone Williams , 26 , and Carlton Hipps , 30 , charged in the fatal shooting . Williams had two prior arrests , while Hipps had six arrests and had been out on parole since 2009 . Wilson , an eight-year veteran on the force , was buying a video game for his 8-year-old son for getting good grades when robbery occurred . AK-47 was recovered during a search warrant at one of the suspects ' home .