An 11-day-old baby boy has died after the car he was travelling in collided with another car on the M6 near Cannock, Staffordshire Police said.
His mother and two more of her children, a girl aged four and an 18 month old boy, were also taken to hospital following the crash yesterday but were later discharged with minor injuries.
The crash happened on the southbound carriageway of the M6 between the two slip roads for Hilton Services near Cannock.
It involved a grey Seat Leon and a silver Mercedes C-Class.
Anyone who witnessed the crash is asked to contact Staffordshire Police on 101.