Police searching for an underground blade attacker have arrested a man and recovered a pair of scissors at a Heathrow Airport Tube station.
British Transport Police launched a hunt across the London Underground service after a 63-year-old was attacked with a blade on the Victoria line platform at Finsbury Park, North London.
Armed officers earlier halted the Victoria line service to board and search a carriage at King's Cross St Pancras Underground station.
The man is due to be questioned by police on suspicion of causing grievous bodily harm.
A BTP spokesman said: "A man has been arrested at Heathrow Terminals 1,2,3 Underground station on suspicion of GBH after a man was assaulted at Finsbury Park Underground station earlier today.
"BTP detectives will be speaking to the man in due course.
"The assault occurred on the southbound Victoria line platform shortly before 1.45pm.
"A 63-year-old man was taken to hospital with cuts to his body and face. His injuries are not thought to be life-threatening.
"Armed BTP officers searching for a possible suspect met a southbound Victoria line train at King's Cross St Pancras Underground station at approximately 3pm."
A BTP Spokesman confirmed that a pair of scissors were recovered when the man was arrested.
A spokeswoman for Transport for London said the Victoria line has resumed a normal service, with the exception of the planned closure between Seven Sisters and Walthamstow Central.