Eleven people were killed when militants attacked a prison in the Democratic Republic of Congo and freed more than 900 inmates.

The Governor of North Kivu province Julien Paluku said the attackers had used heavy weapons in the raid on the jail in Beni.

He said at least eight of the dead are prison guards, adding that  a curfew has been declared.

The identity of the attackers is not yet clear.

The incident in Beni is the latest in a series of jailbreaks in the country.

Last month, about 4,000 inmates escaped from a high security prison in the capital, Kinshasa, following an attack blamed on a separatist sect.