CONCORD (CBS) – A man died Wednesday morning while working in a crawl space at Emerson Hospital in Concord.

The Middlesex District Attorney’s office said a 46-year-old Hudson man was working on a boiler system around 11:30 a.m. when the accident happened. The worker’s identification has not been released.

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A fire truck on scene at Emerson Hospital after a worker was killed working in a crawl space. (WBZ-TV)

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No foul play is suspected in the man’s death. The medical examiner will work to determine how the man died.

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The Occupational Safety and Health Administration (OSHA) is investigating the incident along with the DA’s office, and Concord Police.