New Delhi, Jan. 21 -- Guards from the Kurdish-led Syrian Democratic Forces abandoned a camp Tuesday in northeast Syria housing thousands of people linked to the Islamic State group, and the Syrian military said that allowed detainees to escape.

Hours later, the Syrian government and the SDF announced a new four-day truce after a previous ceasefire broke down. The two sides have been clashing for two weeks, amid a breakdown in negotiations over a deal to merge their forces together.

The al-Hol camp houses mainly women and children who are relatives of IS members. Thousands of accused IS militants are separately housed in prisons in northeast Syria.

Syria's interior ministry accused the SDF of allowing the release of "a number of detaine...