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.
Man Dies in Lincoln House Fire
Emergency crews called to the scene yesterday afternoon, the Ontario Fire Marshall is looking into the cause
Potential Niagara Parks Strike
The union says it's mainly for fair wages
Man Charged with Possessing Child Porn
Police made the discovering in St. Catharines home
Be Wary of Spring Time Scams: NRP
"Companies" will claim work is needed
Man Killed Walking Along QEW
OPP say he was hit near Fruitland Road, by more than one vehicle, asking drivers involved to come forward
Senior Charged with Hate Speech Crime
NRP say buildings in Niagara Falls were spray painted
Medical Researchers Gather in Niagara
Roughly 200 people met to discuss better patient care and research
Province Passes Gov't Reform Act
The Better Regional Governance Act reduces the size of Niagara regional council