Passengers board a train at Waterloo Station
Passengers boarding a train at Waterloo StationGetty

A man was killed in the early hours of this morning outside Waterloo railway station, London. Police were summoned after reports of an attack at a bus stop outside the station at 2.45am. Officers and paramedics discovered a man in his 40s with serious head injuries. He was declared dead at the scene.

An arrest has been made of a 29-year-old man under suspicion of murder. He is being held in custody at a south London police station. The police have stated that they are not searching for anyone else.

So far the victim has not been formally identified, but Scotland Yard say they are informing his next of kin. Road closures and police cordons are still in place around the scene of the killing.

Waterloo is the UK's busiest railway station. According to statistics from the Office of Rail Regulation, more than 98.4 million passengers passed through the station during 2013 to 2014.

Detective Chief Inspector Diane Tudway, of the Homicide and Major Crime Command, said in a statement: "This is a very busy part of London frequented by both commuters and those on a night out," she said. "My team is keen to hear from anyone who was in the area or passing by at the time of this incident and may have witnessed what occurred or seen something that could assist the investigation.

"I would urge all witnesses and anyone with information to contact the incident room on 0208 721 4005 or call Crimestoppers anonymously on 0800 555 111."