In nearly a year of turmoil, security collapsed in some parts of Yemen. Al-Qaida linked militants also took advantage of the political unrest to reinforce their presence in some areas in the country's south.
On Saturday, security officials in Yemen said suspected al-Qaida-linked gunmen shot and killed a senior intelligence officer.
They said Hassan al-Mansouri was killed Saturday in Labous, in the southern Lahj province, following a day of clashes between local tribesmen and suspected members of al-Qaida in the area. Speaking on condition of anonymity because they were not authorized to brief reporters, the officials said Al-Mansouri had organized local tribes in a campaign to weed out the militants from the area.
The officials said they suspect the officers' killers are from al-Qaida in the Arabian Peninsula. Washington considers the group as the most dangerous al-Qaida branch to threaten U.S. interests, and has launched drone attacks against it in Yemen.
Yemen security forces also battle against the group, which has killed security officials in the past.