A man has been taken to hospital with serious injuries after he was stabbed on a road in north west London.
The victim, who police said is aged in his 20s, was attacked on Harrow Road, Brent, at about 8.15pm this evening.
He suffered a stab wound to the back of his leg which is not thought to be life-threatening, Scotland Yard said.
Police officers administered first aid at the scene before he was taken to hospital.
They later arrested a man aged in his 30s on suspicion of causing grievous bodily harm. He is in custody at a west London police station this evening.
Pictures from the scene showed forensic tents being put up by police and a cordon being put in place.
The road was closed at the junction with Scrubs Lane while officers investigated, Transport for London said.
Detectives in Hammersmith and Fulham are investigating.
Anyone with information should call police on 101.
