Karachi was tense on Saturday as minority Shi’ite Muslims buried the victims of a suicide bomb attack on a mosque that killed 15 people and injured more than 125.‘‘Stop killing innocent Shi’ites!’’ shouted a crowd of about 200 mourners during a funeral procession for one of the victims killed by a suicide attacker who detonated a powerful bomb during Friday prayers in a mosque in Karachi. Relatives of at least a dozen victims buried their loved ones as authorities deployed paramilitary troops at Shi’ite religious sites in the volatile port city of 14 million people. Witnesses said police used batons to disperse groups of angry mourners who went on a rampage in Karachi. Some of the protesters suffered minor injuries in scuffles with police, who struggled to control the crowds. The protesters set at least two vehicles on fire, blocked roads and attacked a police post in the city.No group has claimed responsibility for the attack. Fayyaz Leghari, the city’s police chief of investigations, said an inquiry was underway to ascertain the identity of the bomber. — (Reuters)