Admiral Art McDonald, has stepped down ahead of an investigation into unspecified allegations.
Defence Minister Harjit Sajjan made the bombshell announcement late last night.
He said McDonald left the post voluntarily, and the Canadian Forces National Investigation Service had been tasked to look into the matter.
Lieutenant General Wayne Eyre is taking over the role of acting chief of the defence staff.
2 Niagara men arrested by Toronto Police
Accessed rooftop to take pics for social media
Niagara Parks Tree Planting Day - Sat. Oct. 24
The free event takes place from 10AM-Noon
Gov't Wastes Too Much Money: Candidate
Gov't Pressured to Investigate Whale Deaths
Niagara Falls MPP is asking the government
Niagara Falls Receives Payment for Casinos
OLG pays for hosting 2 casinos
Niagara Falls Man Charged with Child Porn
The investigation began in August
Toronto Man Charged with Drug Trafficking
Respecting Taxpayers, Douglas Memorial Candidate's Concerns