UK police arrest 10th suspect in brutal killing of off-duty soldier in London street

The mother of killed Drummer Lee Rigby, Lyn Rigby, centre, holds onto a teddy bear as she joins his stepfather Ian, and other family members looking at floral tributes outside Woolwich Barracks as they visit the scene of his murder in Woolwich, south-east London, Sunday May 26, 2013. Family members laid flowers at the Woolwich Barracks where the 25-year-old soldier of the Royal Regiment of Fusiliers Lee Rigby was attacked and killed by two men in broad daylight Wednesday May 22, and where hundreds of floral tributes have been left by public well wishers. (AP Photo / John Stillwell, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVES (The Associated Press)

FILE - In this Sept. 5, 2005 file photo, Muslim cleric Omar Bakri Mohammed gestures while talking to the media, in Beirut, Lebanon. The slaying of a British soldier in east London cast a spotlight on radical preachers that influenced Michael Adebolajo, the attacker seen in videos with bloody hands wielding a butcher knife. It also raised questions about the reach of the terrorist group al-Shabab, after a British government official said one of the two men tried to go to Somalia to train or fight with the group.(AP Photo/Hussein Malla, File) (The Associated Press)

FILE - Members of Somalia's al- Shabab militant group patrol on foot on the outskirts of Mogadishu in this Monday, March, 5, 2012 file photo. The slaying of a British soldier in east London cast a spotlight on radical preachers that influenced Michael Adebolajo, the attacker seen in videos with bloody hands wielding a butcher knife. It also raised questions about the reach of the terrorist group al-Shabab, after a British government official said one of the two men tried to go to Somalia to train or fight with the group. (AP Photo, File) (The Associated Press)

Police investigating the vicious killing of an off-duty British soldier on a London street in an apparent Islamic extremist attack say they have arrested a 10th suspect.

London police say the 50-year-old man was arrested east of London on Monday on suspicion of conspiring to murder 25-year-old soldier Lee Rigby. Police didn't provide further details about the suspect's identity.

Rigby was walking near his barracks in southeast London's Woolwich area last week when he was run over by a vehicle and repeatedly stabbed with knives and meat cleavers.

Police have already arrested nine others, including two main suspects shot by officers at the scene of the killing who are hospitalized under armed guard.