Tunisia's Interior Ministry says a suspected extremist blew himself up in the Ben Guerdane area near the border with Libya following a standoff with police.

The man's identity hasn't been disclosed. The ministry said in a statement issued Monday that a second suspect was shot during an exchange of fire.

Authorities said the two were members of Jund al-Khilafa, an armed group which has pledged allegiance to the Islamic State.

Tunisia's security forces battled armed groups that attacked security and military sites in Ben Guerdane two years ago with the alleged goal of creating an emirate. Some of the groups crossed over from Libya.

Tunisian security forces killed more than 50 alleged attackers. More than a dozen officers and seven civilians also died.