‘A lot of unanswered questions’: 3 dead, 6 hurt in mass shooting at party in West Philadelphia  NBC Philadelphia3 killed and 6 injured in shooting at Philadelphia party  NBC News3 dead, several injured in shooting in West Philadelphia, police say  CBS NewsPhiladelphia mass shooting: 3 killed, 6 injured at possible block party as suspects sought  FOX 29 Philadelphia9 shot, 3 fatally, when ‘multiple’ gunmen open fire at large Philadelphia party, police say  ABC News