An athlete from Sierra Leone who went missing after finishing 20th in the London Marathon has been found.

The London Metropolitan Police said Mami Konneh-Lahun (24) returned to her accommodation today, a day after she was reported missing.

She had been staying at an address in the Greenwich area since arriving in the UK a week ago, but failed to return back following the race.

She had been due to fly home to Sierra Leone today and police had said she had no known links to the UK and does not have a mobile phone.

Ms. Konneh-Lahun is reportedly Sierra Leone's fastest-ever female 5,000 metre and 10,000 metre runner.

Last year, she won the Sierra Leone and Liberia marathons.

Meanwhile a man (42) has died after running the Marathon. The unnamed man collapsed after crossing the finishing line and received medical attention.

But he was pronounced dead when he arrived at hospital.

In a statement, the event's organisers, Virgin Money, expressed their "sincere condolences" to his family. "We will not be releasing any further details of this tragic incident and would ask for your understanding in this matter" it said.

"We would like to emphasise that our immediate concern is for the family of the deceased. Our thoughts and deepest sympathies are with them at this difficult time".

It was the first death at the event since hairdresser Claire Squires (30) collapsed just a mile from the finishing line in 2012 before dying of cardiac failure. She had been raising money for the Samaritans and donations to the charity soared in the weeks after her death.

A total of 36,000 competitors took part in the 26.2 mile event. Bright sunshine and light breeze meant conditions were warm, reaching 16 degrees Celsius in St. James's Park.

The men's race was won by Kenyan Wilson Kipsang, while compatriot Edna Kiplagat finished first in the women's event.