Witnesses have said the sheriff was one of two guards transporting two prisoners Tuesday morning who were in custody following a drug bust.
There was a scuffle in a hallway and witnesses heard two or three shots.
Two men were spotted fleeing in a prisoner transport van, but were arrested within the hour at a rural home near Whitecourt.
Clayton Ness and Jake MacIntyre, both of Whitecourt, face aggravated assault, assault with a weapon, escape from lawful custody and other charges.
They are being held in custody and are to appear in Whitecourt provincial court on March 12.
Alberta Solicitor General Jonathan Denis says there will be a review at the courthouse.
"We will have our own internal investigation to see what could have been done, if anything, to prevent this casualty," Jonathan Denis said Wednesday.
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