A mother has been killed and her newborn baby girl airlifted to hospital after the car they were in crashed into a lorry.
The crash between a Peugot 406 estate and a red articulated lorry happened at around 11.20am on Friday on the southbound carriageway near junction nine at Bicester, Oxfordshire.
The M40 after the crash
The driver of the Peugeot, a woman in her late 20s, was pronounced dead at the scene.
The baby, which isd to be only a few weeks old, was in the back of the car and flown to John Radcliffe Hospital in Oxford.
"It is not believed the baby is injured however she remains at hospital as a precaution," the police spokesman told The Oxford Mail.
Two lanes of the southbound carriageway have now been reopened but there were long tailbacks after the accident.