Officers from District 14 responded to 89 Dustin Street early Sunday morning for a person injured from a fall. The victim, Martin Lenaghan, 27, of Ireland, and Brighton, suffered fatal injuries when the spiral staircase he was on separated from the structure at 89-91 Dustin Street and collapsed. Lenaghan was transported to St. Elizabeth’s Medical Center and was pronounced dead. The preliminary investigation indicates that Lenaghan’s death was an accident and alcohol may have been involved. Boston Police and Boston Inspectional Services are investigating the circumstances surrounding this death.