Ten UN peacekeepers from Chad have been killed in an attack by suspected Islamist militants in northern Mali, the UN says.

Another 25 Chadian troops were injured when the gunmen stormed the UN camp in Aguelhok early on Sunday. The attack was repelled, the UN says.

The UN mission in Mali was set up in 2013 to fight Islamist militias operating in the country.

Militants have regularly attacked UN and Malian troops since then.

Al-Qaeda's North-African branch, Al-Qaeda in the Islamic Maghreb, said it carried out the latest attack, local media report.