US convoy comes under attack in Fallujah
None of the occupants were seen emerging from the vehicle as it burst into flames, according to Ahmed Suheil, 40 and Juma Abbas, 35, who both said they witnessed the incident.
US spokesman Lieutenant Colonel George Krivo said, "It came under fire. There were no casualties."
AFP photographer Patrick Baz and a Reuters cameraman, who covered the aftermath of the blast, were detained by Iraqi police. Krivo confirmed the two journalists had been detained, adding the incident was under investigation.