Three men and a police officer are being treated in hospital after they were stabbed at a mosque, West Midlands Police have confirmed today. A 32-year-old man is now being questioned on suspicion of attempted murder, police said. Initial reports suggest an argument may have taken place inside the mosque prior to the attack. The male police officer was attacked after being called to attend reports that three men had been stabbed at the mosque in the Ward End area of Birmingham. All four men are described as in a stable condition. Mohammed Shafiq, the leader of national Muslim organisation the Ramadhan Foundation, said a nearby resident overheard an argument coming from inside the mosque and believes the attack followed a dispute between members. Officers were today conducting patrols in the area surrounding the mosque to reassure local residents. A cordon is in place while investigations continue at the mosque. Police are investigating whether the attack was a hate crime.