The Glenshane Road remains closed in both directions after a cyclist in his 20's was critically injured in a collision with a van.
A PSNI spokesman said the Glenshane Road near Maghera had been closed in both directions, following a serious road traffic collision earlier today, involving a transit van and a cyclist.
He said a cyclist in his 20s was in a critical condition in hospital.
The driver of the other vehicle is not believed to have been injured.
Inspector Andrew Archibald would appeal to anyone who was on the Glenshane Road this morning between 8.10 – 8.30am and may have witnessed this incident, to contact police on the non-emergency number 101 quoting reference 225 of 16/11/17.
A spokeswoman for the Belfast Trust said the cyclist was in the Royal Victoria Hospital in a "critical condition".