BAGHDAD -- A US Army helicopter on patrol crashed in a swampy area north of Baghdad on Monday morning, killing both crew members, US authorities said. It was the third such crash this month.
Witnesses said the AH-64
US military authorities in Baghdad said in a statement that it was ''premature" to state the cause of the crash, but noted that the helicopter went down in an area ''known for terrorist activity."
The officials said that the Apache, conducting an air patrol, belonged to a group called Task Force Ironhorse, and that the crash was under investigation.
The crash area was cordoned off by US troops. A US Army lieutenant, who did not identify himself, said that the helicopter had been hit by a missile and that troops were searching for the attackers.
Two groups asserted responsibility for the incident. One group, which identified itself as the Mujaheddin Army, published a video on a Web site used by insurgent groups in which there was a whooshing sound followed by a smoke trail as a missile apparently was fired at a speck in the sky. As the stricken helicopter lost altitude, leaving a plume of black smoke, a voice in the background chanted, ''Allahu akbar," or ''God is great."
The authenticity of the statements and the video could not be verified.
In the two prior raids, insurgents apparently shot down an OH-58D Kiowa Warrior reconnaissance helicopter on Friday near Mosul in northern Iraq, killing its two pilots.
On Jan. 7, a UH-60 Black Hawk helicopter flying in bad weather near the northern city of Tall Afar crashed, killing all four US soldiers and eight American civilians aboard. The military is still investigating both incidents.
The Army's heavily armed and armored Apaches are used to support ground troops with close-in firepower. Although it is unlikely that small-arms fire could bring down an Apache, the helicopter is vulnerable to shoulder-fired, heat-seeking missiles, such as the Russian-made Strela. Thousands of Strelas were sold to the Iraqi government in the years before the US invasion in 2003.
Authorities reported scattered violence elsewhere across Iraq. A roadside bomb hit a convoy carrying US police liaison officers in Baghdad, killing one American civilian responsible for training Iraqi police, according to a statement issued by the US Embassy.
In Muqdadiyah, about 60 miles north of Baghdad, an explosives-laden car sped into an Iraqi police checkpoint, killing four Iraqi police officers and a child, U.S. military authorities said in a statement. The attack took place near a cluster of primary schools where students were taking their midyear exams, Colonel Adnan Lafta of the city police said.
In political developments, the head of the Iraqi election commission announced that he would disallow votes from 227 of the 32,000 ballot boxes collected across the country in parliamentary elections that were held Dec. 15. The invalidation of slightly more than 100,000 votes was not expected to significantly change the results of the election.
Abdul-Hussein Hendawi, the head of the election commission, said at a news conference yesterday that the commission had found fake ballots or too many votes in the boxes.
Sunni Arabs and secular Shi'ite Muslim parties have protested the election results, which heavily favored a coalition of Shi'ite religious parties.