Firefighters were called to Centenary Way, Canklow, at 8.45pm yesterday following reports of a crash. CRIME: Sheffield double stabbing was yards away from school gates They found a man trapped inside a vehicle and had to cut the roof off the vehicle to release him. POLICE: Aunt of Sheffield murder victim claims city it at '˜crisis point' with knife crimeREAD MORE: Sheffield murder suspect remains in custody over fatal stabbing at Centertainment No other details have yet been released.