Police in Britain have arrested a man at Heathrow Airport on suspicion of attempted murder after four men were hit by a car in west London, leaving two critically injured.
The Metropolitan Police were called at 2.43 am on Sunday after reports that four people had been struck by a car in Kingsley Road, close to the junction with Taunton Avenue, in Hounslow.
The pedestrians, all men in their early 20s, were taken to hospital where two remain in a critical condition. The two others were treated for non-life changing injuries.
The driver of the car did not stop at the scene, police said.
Detectives launched an investigation and arrested a 20-year-old man at Heathrow Airport on suspicion of attempted murder just before 7pm. Police said he had booked a flight and was planning to leave the country.
A second man was also arrested nearby on suspicion of assisting an offender.
"This was a serious incident that will have shocked the local community," Detective Chief Inspector Andy Thrower said.
"Two men are in hospital fighting for their lives and our thoughts are with them and their families. "Officers have acted without delay to identify a suspect," Thrower said.
"The arrest - which happened as the man was trying to fly out of the UK - is a timely and crucial development in this ongoing investigation."
