The National Transportation Safety Board investigation into gas explosions that rocked Massachusetts in September is on hold because of the federal government shutdown.
U.S. Sen. Edward Markey (D-Mass.) said the probe has stalled due to a funding lapse for transportation and housing agencies.
Markey said NTSB needs the resources to "complete its investigation and compile a comprehensive account of the safety lapses" that led to the disaster. Residents of Lawrence, Andover and North Andover have already waited too long for answers, he said.
A teenager was killed, two dozen people injured and more than 100 homes and businesses engulfed in flames due to a series of explosions blamed on Columbia Gas, which let too much pressure build up in gas lines.
It remained unclear Saturday when the shutdown might end.