Iraqi agents working as security guards at the UN headquarters in Baghdad may have helped the bombers who killed 23 people earlier this week, a US official said today.

A cement truck packed with explosives detonated outside the offices of the top UN envoy in Iraq, killing him and 19 other people.

A blistering series of attacks, coming nearly hourly, left seven US soldiers wounded in and around the Iraqi capital.

A former top official of Saddam Hussein’s Republican Guard, and cousin of the deposed leader, surrendered to coalition forces in Baghdad today, the US military said.

Updates on some of the people in the spotlight in the days following the September 11 attacks:

RUDOLPH GIULIANI: New York City’s mayor, Giuliani was hailed as the man who calmed New Yorkers. Since leaving office in January he has been in high demand on the lecture circuit where he’s believed to earn as much as £65,000 per speech. He also has a £2m deal to write two books.

Former New York Mayor Rudolph Giuliani, the man who helped America through the September 11 attacks, landed in London tonight, hours before being made an honorary knight.

Mayor Rudolph Giuliani Saturday warned that some of the bodies of the 4,972 missing in the World Trade Center terrorist attack might never be found and announced a massive DNA matching program to help identify those that are recovered.