US to help Pakistan investigate bus attack in Karachi

US Secretary of State John Kerry said that Washington will help the Pakistani authorities investigate the attack by ISIS and Jundallah on a bus in Karachi, TASS reports.

About 50 people died and dozens were injured in the attack. The two extremist organizations promised more attacks on Ismailis, Shiites and Christians.

UN Secretary General Ban Ki-moon urged the Pakistani authorities to use all available means to punish the culprits for the terrorist attack.