New Hampshire authorities are ruling that Boston leader singer Brad Delp, 55, whose death last week sent shock waves through the rock world, was a suicide caused by carbon monoxide poisoning.

The small town of Atkinson, New Hampshire where Delp had settled had made no official comment on its web site — indeed, its police blotter dates back to only last year. Multiple media outlets are confirming the report, however, although not indicating whether Delp left a note or had apparent reason to take his own life.