At least 13 members of Algeria's security forces and a civilian were killed in an ambush by armed groups in the east of the country, Algerian newspapers reported Tuesday. The attack, which took place Sunday in Skikda, was one of the deadliest in the past few weeks and also left about a dozen security officers wounded, according to media reports. No group has yet claimed responsibility for the ambush. One bomb exploded as security forces in a convoy of three vehicles were on patrol in a mountainous area of the Skikda region.