Sources tell Global News Gary Walbourne raised concerns with Defence Minister Harjit Sajjan's office about Gen. Jonathan Vance in 2018.

Experts say the Canadian military is facing an institutional 'crisis' in the wake of twin military police probes launched into its current and former chiefs of defence staff.

Adm. Art McDonald and Gen. Jonathan Vance are facing military police investigations amid what experts call a 'crisis' for the Canadian Forces.

Chief of Defence Staff Adm. Art McDonald stepped aside after a military police probe opened on Wednesday, while Gen. Jonathan Vance also faces an investigation.

Former chief of defence staff Gen. Jonathan Vance is facing allegations of inappropriate behaviour with two female subordinates, including while he was in the top post.

The MPs say Harjit Sajjan has not answered questions or confirmed details reported by Global News of when he first became aware of the allegations against Vance.

Two government sources have told Global News that Gary Walbourne raised concerns about Gen. Jonathan Vance to Defence Minister Harjit Sajjan in 2018.

Gen. Jonathan Vance denies the allegations of inappropriate behaviour and says he has been a "champion" and "friend" to Maj. Kellie Brennan.

Defence Minister Harjit Sajjan dodged repeated questioning on when he learned of allegations against former chief of defense staff Gen. Jonathan Vance.

Harjit Sajjan will be among five top-level witnesses testifying about allegations of inappropriate behaviour by former chief of defence staff Gen. Jonathan Vance.