A grenade blew up today outside the US/UK military headquarters in Baghdad, two days before the anniversary of Saddam Hussein becoming president.
A car drove up at around 4.40pm (local time) and a grenade was thrown out. It landed under a black GMC jeep, and the attacking car drove off.
The grenade shattered the jeep, which belonged to the Tunisian embassy. A Russian embassy vehicle was also lightly damaged.
A previously unknown group, calling itself the Iraqi Jihad Movement, said it would wage attacks against US forces in Iraq.
The statement also paid tribute to Syrians who came to fight the US forces in the three-week war.
It was the second statement from an unknown group vowing to attack US soldiers in two days.
The American Defence Secretary, Donald Rumsfeld, had earlier warned that attacks on US forces in Iraq could increase.
Mr Rumsfeld said it was thought that violence might rise this month because of a number of significant anniversaries for the former ruling Ba'ath Party.
His comments came as Iraq took the first step towards self-government since the fall of Saddam Hussein with the inaugural meeting of a governing council made up of Iraqi nationals.
Eary this morning, an American soldier was killed and six others were wounded.
It is believed the soldier died after his military vehicle was hit by a rocket-propelled grenade in Baghdad.
Witnesses said the vehicle was attacked as it drove on a road leading to Baghdad airport.
