Baghdad, Iraq ? Gunmen opened fire Sunday on a convoy carrying Iraq’s minister of public works, killing a driver and a bodyguard and injuring two others, the U.S.-led coalition said. The minister, Nisreen Berwari, was unharmed.

In another attack in the same city, Mosul, gunmen killed a Briton and a Canadian who were working as security guards for foreign electrical engineers at a power station. The ambush appeared to be part of a campaign to undermine U.S.-led reconstruction efforts in Iraq.

The attacks highlighted the tenuous security situation in Iraq’s third-largest city, once a prime recruiting ground for the officer corps of Saddam Hussein’s military.

Berwari was returning to Mosul from a meeting in the city of Dohuk when her convoy was attacked, said Kristi Clemens, a coalition spokeswoman in Baghdad.

Saro Qader, an official with the Kurdistan Democratic Party, described the attack as an “assassination attempt.” Berwari is a member of the Kurdish party.

Iraqi police said the attack occurred around 11 a.m. in the al-Karama neighborhood of Mosul. They said the two men who were killed were both bodyguards, and that Berwari was in another car that was not hit by gunfire.

Berwari, who earned a degree at Harvard University’s John F. Kennedy School of Government in 1999, is one of five Kurdish ministers in the coalition-appointed interim government. There are 20 other ministers.

The slain Briton and Canadian had been assigned to protect foreign engineers working for General Electric Co., a coalition spokesman said on condition of anonymity. GE is helping rebuild Iraq’s decrepit electrical infrastructure, which has suffered from war, neglect and years of sanctions. Power blackouts are frequent.

In London, the Foreign Office said one Briton was killed. In Ottawa, the Canadian Foreign Ministry said a Canadian died. Their names were not released.

Spectators stand in the courtyard of a primary school after it was hit by a rocket in Mosul, Iraq. A rocket, apparently aimed at the City Hall, missed and hit the school, but it failed to explode. The bombing was among other attacks Sunday, including a failed attempt to kill an Iraqi minister.

Other violence in Mosul:

l Iraqi police said two U.S. soldiers were wounded after gunmen in a car opened fire on their military vehicle.

l A U.S. military Stryker vehicle caught fire after being struck by a rocket-propelled grenade, but there were no injuries, the U.S. military said.

l Gunmen exchanged fire with Iraqi police guarding the main gate of the television station. Two police officers were injured, and the attackers fled.

l A rocket, possibly aimed at a police station a block away, hit a classroom at a primary school while a lesson was in progress. It failed to explode, and no pupils were injured.