Officials say a teenager from the West Bank who was held in an Israeli prison for six months without being charged died after collapsing in unclear circumstances.

The Israeli army said Tuesday that it uncovered an explosives laboratory in Tulkarem and arrested dozens of Palestinians in a series of raids. The military said it found a facility containing tools for manufacturing explosives in the northern occupied West Bank.

Israeli forces are trying a new tactic in a major hub for militants: emptying them out.