Baghdad, Iraq ? Rebel rockets slammed into a government building in the northern city of Mosul on Saturday, killing two civilians and wounding 14 others. An explosion rocked central Baghdad in a roadside bomb attack on a convoy, wounding five Iraqis.

The Mosul attack brought to 21 the number of people killed in two days of violence across the country.

The rocket launcher was hidden in a wooden cart that was wheeled up to a blast wall surrounding the three-story main government building, said Mosul police Sgt. Jassim Mohammed.

In the country’s south Saturday, a gunman shot and killed the Iraqi driver of a civilian truck carrying supplies to Japan’s military, Japan’s Kyodo News agency said. The attack was an apparent robbery attempt, it said.

Japan’s Defense Agency said a civilian truck hired to transport supplies to Japanese troops in Samawah had been attacked. Tokyo has about 1,000 naval, air, and ground forces in Iraq to help with reconstruction.

In central Baghdad Saturday, a bomb exploded on a street as a convoy of sport utility vehicles passed, wounding five Iraqis, U.S. Army Lt. Col. Peter Jones said. It was not clear who was in the cars. U.S. troops sealed off the area after the blast.

Fighting Friday in the city of Fallujah, about 35 miles west of Baghdad, left one U.S. Marine dead and seven wounded, a U.S. spokesman in Baghdad said. The Marines and Iraqi insurgents fought for hours in the alleys of the city, which has resisted American efforts to pacify it since the ouster of Saddam Hussein a year ago.

The 1st Marine Expeditionary Force issued a statement saying it was “conducting offensive operations … to foster a secure and stable environment for the people.” It went on to say that “some have chosen to fight. Having elected their fate, they are being engaged and destroyed.”

A freelance cameraman for ABC television, Burhan Mohammed Mazhour, 34, was shot in the head and killed while taping the clashes. It was unclear who killed him.

A car is badly damaged after a roadside bomb exploded in central Baghdad. Two Iraqis were wounded in Saturday's blast, and cars were damaged, Iraqi police said. At least 21 people have died in attacks in the past two days in Iraq.

Four other Iraqis were killed and six wounded in the fighting, said Diyaa al-Jumailee, a doctor at Fallujah hospital.