Armed individuals aboard four-wheel-drive vehicles infiltrated, on Wednesday morning, into the Tunisian territory at Bir Znigra, 70 km of Fawwar delegation, in the Governorate of Kebili, on the Tunisian-Algerian border, reported local security sources. Army units conducted a search operation for this armed group by land and air in this desert area of Bir Znigra, the same source told TAP correspondent in Kebili, adding that exchanges of fire are taking place between National Army units and these individuals who are still unidentified.