Three men in their 50s have died following an explosion Monday at a wood-manufacturing plant in Beauceville, Que., police said Tuesday.

Eight people were originally injured in the incident.

Six suffered injuries so serious that they had to be intubated and transferred to the trauma unit at the Enfant-Jésus Hospital in Quebec City, about 80 kilometres away, for more specialized care.

Three of those patients died on Tuesday and three others remain in critical condition, the provincial police force said.

Cause still being determined

“The investigation is continuing to determine the exact causes and circumstances of this fire,” said the statement from the Sûreté du