A Tunisian shepherd who was allegedly attacked by a group of Islamist militants as he grazed his flock has died of his injuries, the country's defence ministry has said.

Mohamed Griri, 28, was found by his brother on Saturday "screaming in pain" in a closed military zone on Mount Chaambi, in Kasserine.

"He was bashed in the head and his nose was cut off," his brother told private Mosaique FM.

Mr Griri was rushed to hospital in the capital Tunis, almost 200 miles (310km) away.

He succumbed to his injuries on Sunday night, Tunisia's defence ministry said in a statement, according to news agency AFP.

The ministry said he had been "attacked by a group of terrorists".

Extremists have attacked shepherds in Tunisia before.