http://news.yahoo.com/s/ap/20060320...m39YdcUewgF;_ylu=X3oDMTA3MXN1bHE0BHNlYwN0bWE- By BASSEM MROUE, Associated Press Writer 21 minutes ago Shortly after a roadside bomb killed a U.S. Marine in a western Iraqi town, American troops went into nearby houses and shot dead 15 members of two families, including a 3-year-old-girl, residents say. The military is investigating possible misconduct by the Marines and confirms there is a video, which Time Magazine says shows the aftermath of the Marines' assault. Residents contacted by The Associated Press described what happened after the Nov. 19 roadside bomb in the town of Haditha, 140 miles northwest of Baghdad, as "a massacre." Khaled Ahmed Rsayef, whose brother and six other members of his family were killed in the incident, said the roadside bomb exploded at about 7:15 a.m. in the al-Subhani neighborhood. A U.S. Humvee was badly damaged. The military acknowledged Monday it was investigating the incident after it was approached by Time with accounts from residents, officials and hospital authorities in Haditha as well as a videotape purportedly showing the aftermath of the incident. Military officials declined further comment. A U.S. military statement shortly after the November attack described what happened as an ambush on a joint U.S.-Iraqi patrol, with a roadside bombing and subsequent firefight killing 15 civilians, eight insurgents and a U.S. Marine. The statement said the 15 civilians were killed by the blast, a claim the residents strongly denied. Residents said there only was a roadside bombing, and all the shooting was done by American troops. Time, in a story in this week's edition, reported that a U.S. colonel went to Haditha for a weeklong probe to interview Marines, survivors and doctors at the morgue. The magazine cited unidentified military officials close to the investigation. The probe, Time reported, concluded that the civilians were killed by Marines and not a roadside bomb, and that no insurgents appeared to be in the first two houses raided by the Marines. The probe found, however, that the deaths were the result of "collateral damage," investigators said.