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Stranded families growing weary and frustrated since a deadly Texas fertilizer plant explosion left them barricaded from their battered homes finally began returning Saturday, but only under a curfew and strict warnings to not wander beyond their own yards.

Authorities gave the much-awaited OK after a nervous morning. Emergency workers had told residents packed in a hotel — waiting for updates about their neighborhood — that leaking gas tanks were causing small fires near the blast site, keeping authorities from lifting blockades.

Officials quickly emphasized that the fires were contained and the town of West was not in danger. They later repeated that message as evacuees in a mile-long line of cars inched along a downtown road and toward the blast radius, although the chances that most would get to their houses Saturday night dimmed as a 7 p.m. curfew approached.