Police have made three arrests after a teenager was stabbed in Droylsden.
Officers were called to reports of a fight on Monday evening, but the crowd had broken up by the time they arrived.
They found a 16-year-old boy with stab wounds to his side, who was taken to hospital for treatment.
He remains in a serious condition.
An 18-year-old man and two teenagers aged 16 and 17 have been arrested on suspicion of attempted murder and remain in custody for questioning.