HELENA – Preliminary tests show a Helena man found dead in his garage last Friday died of acute carbon monoxide intoxication.

Christopher Drake, a 35-year-old man, was found dead at his home on the 6100 block of north Montana around 2 p.m.

Lewis and Clark County coroner Bryan Backeberg suspects the death was accidental.

Emergency crews and the county coroner were at the man’s home for about an hour and a half on Friday.

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The full toxicology report is pending. Results are expected in the next few weeks.