A sister has paid tribute to her ‘humble’ and ‘ambitious’ brother who was brutally murdered in a quiet Roehampton street.

Martin Thomas, a 39-year-old aspiring car mechanic had moved to London from Jamaica to make a better life for himself, his sister Vyree Thomas Williams said.

New York-based Mrs Williams said her brother, who is a year older than her, was studying at college and wanted to run his own business.

A murder investigation was launched after police found Mr Thomas suffering serious injuries on Tuesday, April 22.

He died before an ambulance arrived at the scene.

Mrs Williams said the family, who are based in New York and Jamaica, were making arrangements to fly to London to rally together and make funeral plans but it was more difficult because they do not know exactly what happened to him.

She said: "It’s so hard.

"My brother was hard working, he was a survivor.

"I was proud to call him my brother.

"He was a good guy, he was humble.

"He’s not perfect but he was determined to make it and he gave up everything to be in London, to have a better life."

Mrs Williams said they lost their mother to cancer last July and that the family had to pull together to get over this latest tragedy.

She said: "I’m still in shock and waiting for answers.

"He was a positive, ambitious guy, he was very humble."

A 15-year-old boy is in custody accused of murder at an address in Huntingfield Road, Roehampton on Tuesday, 22 April.

On Saturday he appeared at Wimbledon Magistrates' Court, and was remanded in custody to appear at the Old Bailey tomorrow.

Today police arrested a 16-year-old boy on suspicion of murder.

He has been taken to a South London police station for questioning.

A third youth, a 17-year-old, was arrested on suspicion of murder and taken to a south London police station where he was later bailed to return on a date in early June pending further enquiries.

Police are continuing to appeal for information about three men seen loitering in the area prior to the incident.

Anyone with any information should call the incident room on 020 8721 4205 or, to remain anonymous, call Crimestoppers on 0800 555 111.