At least 15 Algerian soldiers were killed when a group of Islamic extremists attacked a military convoy at Tipasa, some 70 kilometres west of the capital Algiers, the local media reported Thursday according to dpa. Some media reported that as many as 20 soldiers were killed in the attack, and at least 20 were injured, in what is being called the deadliest attack in the area in years. There has been no official confirmation by Algerian authorities of the incident, which took place near midday Wednesday.