Two rival communities in Kenya have agreed to pay a fine of 50 cows for every person killed in recent violence, as part of a ceasefire deal.

The Turkana and Samburu communities in northern Kenya have fought for decades over cattle, grazing rights and access to water.

About 15 people were killed in renewed clashes in May, local media reported.

The peace deal covers the same area where at least 42 police officers were killed in 2012 by cattle rustlers.

It was the deadliest attack on the police in Kenya since independence.

Communities living in and around Baragoi town in Samburu county have also agreed to return weapons stolen from police during the 2012 attack.