The U.S. military said on Tuesday that American troops fired on vehicles that tried to break through the roadblocks in Baghdad and north of the capital. Five people were killed including a child in two different shootings.

A suicide bomber disguised as a goat herder in Diyala province, left seven Iraqis dead, the Press Association reports.

One bus was shot at in Baghdad, in a northern neighborhood which is known to be a Shiite militia stronghold. The driver was picking up employees of the Rasheed bank on Tuesday morning and when it reached the roadblock tried to drive through it. The U.S. troops fired warning shots killing four of the passengers, including three women.

A U.S. military spokesman, Rear Admiral Gregory Smith, said: "As I understand it, some of the warning fire ricocheted and may have killed two to three individuals.”

According to him, the driver was traveling in a lane restricted to passenger cars.

The U.S. military issued earlier a statement saying that two people were killed. One manager at Rasheed bank also said that two people were killed in the incident.

After the shooting a Rasheed employee, Yasir, was hospitalized. He said that the passengers on the bus didn’t know if they were hit by bullets or a bomb after the bus passed the barrier.

Yasir added that after the shooting the U.S. troops came to help them. He didn’t understand why the same people who shot at them came immediately to help.

On Monday, in Beiji, at 155 miles north of Baghdad, during a U.S. operation against al Qaida, a vehicle was shot at by American troops when it tried to drive through the roadblock and it didn’t answer at the warning shots. The U.S. military statement said that two men got killed immediately and later a child died due to his injuries.

Cmdr Ed Buclatin, a US spokesman, said: "We regret that civilians are hurt or killed while coalition forces work diligently to rid this country of the terrorist networks that threaten the security of Iraq and our forces."

A suicide bomber disguised as a goat herder targeted the local police headquarters around Baqouba, the capital of violent Diyala province, killing seven people. Three of the seven victims were women, according to police.

Two people were killed by mortar rounds that seemed to aim a local radio station, but instead landed near homes in east of the city of Baqouba, and one civilian was killed by a roadside bomb.