
A commuter reads a newspaper featuring the Boston marathon bomb blasts on the front page, while waiting for a train at East Croydon station in south London, Tuesday, April 16, 2013. British police are reviewing security plans for Sunday's London Marathon, the next major international marathon, because of the bombs that killed three people at the marathon in Boston Monday. (AP Photo/Sang Tan)

A commuter reads a newspaper featuring the Boston marathon bomb blasts on the front page, while waiting for a train at East Croydon station in south London, Tuesday, April 16, 2013. British police are reviewing security plans for Sunday's London Marathon, the next major international marathon, because of the bombs that killed three people at the marathon in Boston Monday. (AP Photo/Sang Tan)

Geraldine Finucane (left) is shown with her three children, Katherine, John and Michael. Belfast solicitor Pat Finucane was shot by Ulster Defense Association gunmen in front of his family in 1989. British police and army agents played “key roles” in the slaying, according to a new probe. (Associated Press)

Geraldine Finucane (left) is shown with her three children, Katherine, John and Michael. Belfast solicitor Pat Finucane was shot by Ulster Defense Association gunmen in front of his family in 1989. British police and army agents played “key roles” in the slaying, according to a new probe. (Associated Press)

This E-FIT image (Electronic Facial Identification Technique) provided by the Metropolitan Police on Dec. 7, 2012, show a computer-based face of a man whom British police are trying to identify after his body was found near London's Heathrow Airport in September. (Associated Press/Metropolitan Police)

This E-FIT image (Electronic Facial Identification Technique) provided by the Metropolitan Police on Dec. 7, 2012, show a computer-based face of a man whom British police are trying to identify after his body was found near London's Heathrow Airport in September. (Associated Press/Metropolitan Police)

This undated hand out photo provided by the Metropolitan Police shows Jacintha Saldanha. British police say that a nurse who was found dead days after she took a hoax call about the pregnant Duchess of Cambridge was originally from India. Scotland Yard said Saturday that 46-year-old Jacintha Saldanha, who was found dead on Friday, Dec. 7, 2012 had lived in Bristol in southwestern England for nine years. Saldanha worked at the London hospital where Prince William's wife, Kate, was being treated for acute morning sickness. The nurse was duped by a prank call performed by two Australian DJs, who pretended to be Queen Elizabeth II and Prince Charles to ask about Kate's condition. (AP Photo/Metropolitan Police)

This undated hand out photo provided by the Metropolitan Police shows Jacintha Saldanha. British police say that a nurse who was found dead days after she took a hoax call about the pregnant Duchess of Cambridge was originally from India. Scotland Yard said Saturday that 46-year-old Jacintha Saldanha, who was found dead on Friday, Dec. 7, 2012 had lived in Bristol in southwestern England for nine years. Saldanha worked at the London hospital where Prince William's wife, Kate, was being treated for acute morning sickness. The nurse was duped by a prank call performed by two Australian DJs, who pretended to be Queen Elizabeth II and Prince Charles to ask about Kate's condition. (AP Photo/Metropolitan Police)

Surrounded by British police, WikiLeaks founder Julian Assange (center) makes a statement to the media and supporters from a window of Ecuadorean Embassy in central London on Sunday, Aug. 19, 2012. (AP Photo/Sang Tan)