Iranian state media blames al-Qaida-linked Sunni extremist group Jaish al-Adl for bus bombing that killed at least 20

Iranian state media blames al-Qaida-linked Sunni extremist group Jaish al-Adl for bus bombing that killed at least 20

TEHRAN, Iran -- Iranian state media blames al-Qaida-linked Sunni extremist group Jaish al-Adl for bus bombing that killed at least 20.