A British military transport plane has crashed north of Baghdad, a senior US military officer has said.
There was no immediate word on casualties, but the plane's wreckage was scattered over a large area, according to reports.
The C-130, en route from Baghdad to the city of Balad, crashed about 40 kilometres (25 miles) northwest of Baghdad, said the official.
Helicopters are at the scene and observed the wreckage
Tragic news, my thoughts are with the families and colleagues of the crew and pax.
The BBC said:
UK military plane crashes in Iraq
Hercules transport plane
It is not known if any survived after a Hercules plane crashed
A British military transport plane has crashed in Iraq, the Ministry of Defence has confirmed.
There was no immediate word on casualties, but the RAF plane's wreckage was scattered over a large area, according to reports.
The C-130 Hercules, en route from Baghdad to the city of Balad, crashed about 40 kilometres (25 miles) north west of Baghdad, say US officials.
The incident was reported at 1725 local time (1425 GMT).
Helicopters are at the scene and have observed the wreckage.
A spokesman for the Ministry of Defence said of the crash: "It has just happened and it is one of ours."
British military chiefs have used the plane as a "workhorse" to transport troops, fuel, ammunition and humanitarian relief.
It is the favoured aircraft of special forces (SAS) and is regarded as being especially of use in Iraq for its ability to land in desert conditions.
Contact was lost with the aircraft suddenly with no warning from the pilot. One area of consideration for the cause is a SAM. Another was a collision with another aircraft [none have been reported missing]. Mechanical trouble is a last possibility. What a tragedy.