Eleven people were killed in fighting between nomadic herders and sedentary farmers in a dispute over trampled crops in southern Chad, the local governor said Wednesday.

The violence broke out in the district of Koumogo on Monday, causing the death of three herders and eight farmers, the governor of Moyen-Chari province, Abbadi Sahir, told AFP by phone.

Clashes between settled farmers and the nomadic Arab herders are a worsening problem in the arid Sahel, where tensions over access to land are frequent.

The death toll and details of the confrontation were confirmed by a local tribal chief, who spoke to AFP on condition of anonymity.

According to the chief, a herder was killed after cattle trampled some crops. In retaliation, herders used firearms to attack a farmers' camp, he said.

Police have been deployed at the camp and the governor said he was in negotiations with both sides to calm tensions.

President Idriss Deby this month declared a state of emergency and deployed troops to two eastern provinces, Sila and Ouaddai, where 50 people have died since August 9 in fighting. (AFP/Thisismoney,UK)