What we know about the Birmingham shooting that left 4 people dead  CNNAlabama Mass Shooting Update: Police Say Gunman May Have Been Paid  NewsweekBirmingham’s 5 Points South mass shooting: 4 dead, 17 injured; massive manhunt underway  AL.comBPD: 1 dead, 1 suffers life-threatening injuries in Sunday night shooting  WBRCAlabama mass shooting was ‘paid and targeted’ attack; manhunt underway  Hindustan Times