British soldier slain on London street

Police officers stand guard near the thousands of floral and other tributes left in honor of murdered 25-year-old soldier, Lee Rigby, at the scene near Woolwich Barracks in London.  (Kirsty Wigglesworth / AP)

The family of murdered British soldier Lee Rigby express their grief at the site of his death in Woolwich, east London.  (Stringer / AFP/Getty Images)

Flowers laid by the family of the murdered British soldier Lee Rigby at the site of his death in Woolwich, east London.  (Stringer / AFP/Getty Images)

A supporter of the far-right English Defence League (EDL) gestures near Downing Street in central London during a gathering to protest the government following the murder of British soldier Lee Rigby.  (Leon Neal / AFP/Getty Images)

Demonstrators form a counter protest to the supporters of the far-right English Defence League (EDL) as they protest in central London.  (Leon Neal / AFP/Getty Images)

A woman is touched by floral tributes left at the scene where Lee Rigby was slain on a London street in the Woolwich district.  (Justin Tallis / AFP/Getty Images)

Police search an apartment in Greenwich in south London where one of the suspects in the attack on Lee Rigby is believed to live. In addition to the two suspects who were hospitalized after being shot by police, authorities said they had arrested a man and a woman, both 29, on suspicion of conspiracy to murder.  (Bogdan Maran / Associated Press)

A forensics officer removes items from an apartment where one of the suspects in the slaying of British soldier Lee Rigby, identified in media reports as 28-year-old Michael Adebolajo, is believed to live.  (Dominic Lipinski / Associated Press)