Citing defence ministry spokesman Belhassen Oueslati, the television channel yesterday said that army and national guard units had launched a search for the unknown attackers.
Tunisian authorities gave no comment when asked for further details by AFP.
Tunisian forces have, since 2012, been trying to flush out groups of extremists holed up in the country's mountainous regions, notably Mghilla and Chaambi, in the central Kasserine region.
Since a revolution in 2011, Tunisia has seen the rise of a jihadist movement responsible for the deaths of dozens of soldiers and police officers as well as civilians.
The country has been under a state of emergency since a string of deadly attacks in 2015.