Tunisia's Defence Ministry says a soldier was killed and a civilian wounded after militants opened fire on a military post near the Algerian border.
The statement on Sunday said the attack on a military base in the town of Sbeitla took place overnight and at least two of the attackers were wounded.
Security forces arrested 10 people in connection with the attack.
A police post in the nearby city of Kasserine was also attacked that night, but there were no casualties.
More than a dozen Tunisian soldiers have been killed in a series of attacks over the past month in the rugged areas near the Algerian borders where al-Qaeda-linked militants are believed to be hiding.
Tunisia is battling radical armed Islamists with links to the Algerian branch of al-Qaeda. - Sapa-AP