QUETTA, Pakistan (AP) – A series of bombings killed 115 people across Pakistan on Thursday, including 81 who died in twin blasts on a bustling billiards hall in a Shiite area of the southwestern city of Quetta.

Pakistan’s minority Shiite Muslims have increasingly been targeted by radical Sunnis who consider them heretics, and a militant Sunni group claimed responsibility for Thursday’s deadliest attack – sending a suicide bomber into the packed pool hall and then detonating a car bomb five minutes later.

It was one of the deadliest days in recent years for a country that is no stranger to violence from radical Islamists, militant separatists and criminal gangs.