A powerful bomb was detonated inside a Shiite mosque in Pakistan during Friday prayers, killing at least 56 worshippers and wounding nearly 200 others, many of them critically, hospital officials said. The deadly explosion, reportedly carried out by a suicide bomber, occurred as worshippers had gathered at the mosque in the country’s northwestern city of Peshawar. No terrorist group has immediately claimed responsibility for the attack. “First I heard five to six gunshots and then I saw the suicide bomber enter the mosque and a huge explosion occurred,” a witness who identified himself as Naeem told Al Jazeera. “The doors of my house opened with a bang and I fell down on the ground. When I entered the mosque, there was smoke and dust and people were lying in blood.” Peshawar Police Chief Muhammed Ejaz Khan said the violence started when an armed attacker opened fire on police outside the mosque. One …