UPDATE 2:

TUNIS: Tunisia's government says 45 people have been killed after extremists attacked a town near the Libyan border.

The interior and defense ministries said in a statement that the Tunisian government has closed its two border crossings with Libya because of the attack Monday.

The statement says 28 "terrorists" have been killed in the fighting, seven civilians and 10 members of Tunisia's security forces.

The attack comes amid growing international concern about Islamic State extremists in Libya.

UPDATE 1:

Tunisia: At least 26 dead in clashes near Libyan border

TUNIS: Tunisian police and unidentified gunmen clashed near the Libyan border on Monday, killing at least 26 people, authorities said, amid increasing concern that violent extremism in Libya could destabilise the region.

The dead included 21 attackers, one Tunisian soldier and four civilians, the interior and defense ministries said in a joint statement. A 12-year-old girl was among the civilians who were killed.

The gunmen targeted a police station and military facilities at dawn in the border town of Ben Guerdane in eastern Tunisia, Interior Ministry spokesman Yasser Mosbah told The Associated Press earlier.

Hospital official Abdelkrim Sakroud said on state radio that three corpses had been brought in, including that of the 12-year-old girl.

The Tunisian military sent reinforcements and helicopters to the area around Ben Guerdane and authorities were hunting several attackers still at large. The ministry urged residents to stay indoors.

The violence comes amid increasing international concern about Islamic State extremists in Libya. Tunisia's fledgling democratic government is especially worried after dozens of tourists were killed in extremist attacks in Tunisia last year.

Last week, Tunisian security forces killed five heavily-armed men in an hours-long firefight after they crossed into the country from Libya with a larger group. Tunisian security forces had been placed on alert based on "precise information" of possible border infiltrations following the February 19 US raid on an IS camp near the Libyan town of Sabratha, not far from the Tunisian border, the statement said.

Defense Minister Farhat Horchani said last week that German and American security experts were expected in Tunis on Monday to help Tunisia devise a new electronic video-surveillance system of its border with Libya.

Tunisia was targeted last year by three attacks that left 70 people dead and were claimed by IS. According to Tunisian authorities, the attackers had been trained in Libya.

Tunisia: At least 10 dead in clashes near Libyan border

TUNIS: At least 10 people have been killed in clashes between Tunisian police and unidentified gunmen near the Libyan border, authorities said, amid increasing concern that violent extremism in Libya could destabilise the region.

The gunmen targeted a police station and military facilities at dawn Monday in the border town of Ben Guerdane in eastern Tunisia, Interior Ministry spokesman Yasser Mosbah told The Associated Press.

Army units averted an attack on the town's military barracks, and killed at least 10 assailants, according to Defense Ministry spokesman Rachid Bouhoula. One wounded attacker was arrested, he told the AP.

Hospital official Abdelkrim Sakroud said on state radio that three corpses had been brought to the hospital, including that of a 12-year-old girl.

The Tunisian military sent reinforcements and helicopters to the area around Ben Guerdane and authorities are hunting several attackers who are at large. The ministry urged residents to stay indoors.

The violence comes amid increasing international concern about Islamic State extremists in Libya. Tunisia's fledgling democratic government is especially worried after dozens of tourists were killed in extremist attacks in Tunisia last year.

Last week, Tunisian security forces killed five heavily armed men in an hours-long firefight after they crossed into the country from Libya with a larger group. Tunisian security forces had been placed on alert based on "precise information" of possible border infiltrations following the Feb. 19 U.S. raid on an Islamic State group camp near the Libyan town of Sabratha, not far from the Tunisian border, the statement said.