The joint force, comprising 8,000 Algerian and Tunisian soldiers, has been deployed to the southern part of the borders, the source said on condition of anonymity.
Last week, senior military officials of both countries held a meeting in Algeria's capital of Algiers, during which they decided to form a joint force to fight terrorism along the border, especially the rugged mountains between Algeria, Tunisia and Libya.
On July 29, eight Tunisian soldiers belonging to a counter- insurgency unit were killed by terrorists in Mountain Chaambi near the border with Algeria. Since then, Tunisia has launched a wide- scale operation to track down the perpetuators.
Algerian Interior Minister Daho Ould Kablia said Thursday that his country stepped up security presence on the border with Tunisia to thwart any attempt of intrusion by terror groups.
Ould Kablia assured that there is "an exchange of security data " between Algeria and its neighbors to fight against various evils that "threaten the security and stability of the region, including terrorism and all forms of smuggling."