Three people died in south London after being hit by a train, police said today, calling the incident "unexplained".
Reports said spray paint cans were found near the bodies close to Brixton.
"My team are now working hard to understand what happened and how these three people came to lose their life on the railway," said detective Gary Richardson.
"At this time, we are treating their deaths as unexplained as we make a number of immediate inquiries.
"I would ask anyone who was near to Loughborough Junction this morning, and saw something which they think might be relevant, please contact us as soon as possible." Police were trying to ascertain when the incident occurred, with the possibility they were struck by a freight train overnight.