NOT less than 13 people were said to have been killed in an attack on church worshippers by Boko Haram in Gwoza Local Government Area of Borno State, police source and fleeing residents said.'Some armed men stormed a church at Attagara village in Gwoza Local Government and opened fire on worshippers during the Sunday service at about 9.30 a.m., killing nine people,' the police source said, adding that the community also mobilised and succeeded in killing four of the attackers.Also, a fleeing resident of Attangara, Marcus Zamani, said the insurgents came while Sunday service was ongoing.'The attack occurred in the morning at about 9.30 a.m. at EYN Church while the service was going on. Our church has some men as security group. They usually keep vigilance, especially when service is going on. As we were holding the service, we started hearing gunshots and everybody fled, some through the windows and ran into bush.'Men in the community immediately mobilised and pursued the Boko Haram men. They were more than 10, they came with motorcycles and a car.'Our vigilante killed four of the Boko Haram and arrested three. I later discovered nine of our men in the church security group were shot dead. I left Attangara yesterday (Sunday) afternoon, slept at Gwoza, to get to Maiduguri today (Monday),' Marcus said.An indigene of the area living in Maiduguri said his relation in Gwoza town, who visited the village on Sunday afternoon, told him about the incident. Click here to read full news..