The M1 has been closed in both directions near north Nottinghamshire due to a 'serious crash'.
The motorway is closed between junction 30 and 31 near Worksop and is expected to be closed "for a number of hours" according to Derbyshire Roads Policing Unit (RPU).
The incident was described by Highways England as a "serious collision" and was reported around 8pm on Easter Sunday, April 4.
South Yorkshire Police, Yorkshire Ambulance service, traffic officers and maintenence crews are said to be on scene.
A spokesperson for Derbyshire RPU added: "If travelling from Derbyshire on the M1 North you'll only be able to get to Junction 30 Barlborough so find an alternative route."
South Yorkshire Police tweeted: "The Roads Policing Group are currently responding to a serious incident on the M1 motorway along with other emergency service colleagues.
"It remains closed in both directions between junctions 30/31. Please avoid the area and do not join the network - plan alternative routes."
It added: "If you are held in traffic, please be patient. Preparations are being made to remove stranded traffic from the M1 shortly. The NB carriageway will remain closed for some time."
