Two suspects have been detained by police following a mass shooting at a Quebec City mosque that killed six people and wounded another eight. Witnesses at the mosque said two gunmen wearing black ski masks walked into the mosque and started shooting worshippers around 7:55 p.m. In a statement on Sunday night, Prime Minister Justin Trudeau called the massacre at the Centre Culturel Islamique de Québec “a terrorist attack on Muslims.” Police have said the victims were between the ages of 35 and 70. There were 39 others in the building at the time of the shooting who escaped unharmed. The investigation will be led by Quebec’s Integrated National Security Enforcement Team. Officials would not yet comment on the identity of the attackers and have said it is "much too early" to determine their motives or methods. Police did say on Sunday evening that authorities do not believe any suspects remain at large.