At least 44 people, including seven policemen, have been killed in clashes between nomads and farmers in north-eastern Nigeria. Police were sent to quell the unrest on Saturday, but according to police spokesman Chris Olakpe "were killed in cold blood by the warring factions". "Our men are carrying out both air and land patrols of the troubled spot to ensure that there is no more fighting. I think the situation is now calm," he told Reuters news agency. He said the attack in the Song district of Adamawa State was believed to be in revenge for the earlier deaths of seven nomads at the hands of the villagers and was not linked to upcoming elections.