Israeli security forces operated overnight in the West Bank city of Tulkarm, where they eliminated an armed terrorist, destroyed an explosives laboratory and found a Kalashnikov-type rifle, according to the IDF spokesman, who added that engineering forces also uncovered a number of charges buried under axles, raided buildings and interrogated suspects.Thirteen wanted persons were arrested during the night throughout the West Bank. (Elisha Ben Kimon and Meir Turgeman)