Gunmen killed six people, including five police officers, on Tuesday in a pub in f Potiskum, Yobe state where Islamist militants have carried out a wave of bloody attacks, residents said.Police chief Lawan Tanko confirmed the attack without giving casualty numbers, while a resident said five policemen had died in the beer garden shooting carried out by suspected Boko Haram militants.“Five policemen and one bartender were killed in the attack,” said Miko Hamidu, a resident of Potiskum, the town in Yobe state.“The policemen had gone to drink,” he said, adding that the gunmen were suspected Boko Haram members.Another resident gave a similar account, adding that the attackers had sped off on a motorcycle.Dozens of Islamists stormed Potiskum on Friday and launched gun-and-bomb attacks on the police headquarters, leading to all-night battles with security forces.The town is part of the regions placed under emergency rule by President Goodluck Jonathan on New Year’s Eve and also has a dusk-to-dawn curfew.