Investigators say two New Hampshire men who died in an explosion at Hopkinton landscaping company were using a cutting torch to break into a metal container housing fireworks.
Fire marshals say 21-year-old Lucas Burke of Allenstown and 21-year-old Ethan Keeler of Epsom set off the explosion early Tuesday morning.
They say the men were using an oxy-acetylene cutting torch to get into the container. Officials say they were not authorized to be on the property.
State fire marshals did not immediately return a call seeking comment on whether the men knew the container held fireworks.
Officials say the fireworks were consumer-grade, not commercial-grade.
The bodies of both men were found in a detached workshop at New Yard landscaping after the 1:30 a.m. blast.