Nigeria: gunmen in another attack on police station "I am aware of the attack on the Naibawa police station," he said referring to a district in Kano. I am yet to get details. Boko Haram claimed responsibility for the coordinated gun and bomb attacks in the Nigerian city on January 20 - the group's deadliest ever assault - which mainly targeted police. The group has vowed to strike again in several recent messages. In leaflets distributed around Kano overnight, the group warned residents that it would continue to target the city's security services. Sunday's shootout took place in the Naibawa motor park, a major bus terminal on the outskirts of the city, not far from where a German engineer was kidnapped by gunmen on Thursday. "We were saying our evening prayers when shooting broke out around the police station," said local resident Sule Adamu. "We all dispersed without finishing our prayer and moved indoors while passengers who had left the motor park scampered for safety," he added. Earlier on Sunday, security forces had deployed heavily around Kano guarding churches and frisking worshippers as they arrived to pray. Boko Haram has been blamed for the deaths of more than 900 people in roughly 160 separate attacks since July 2009. It has claimed attacks that have killed more than 200 people since the start of 2012.