A confidential informant injured in a jailhouse attack by inmates after his identity was revealed by police has launched a multimillion-dollar civil lawsuit against Peel Regional Police.

A Toronto police officer allegedly gave confidential information to his son, who is accused of using it to help commit a murder and home invasion, according to records obtained by CBC News.

A veteran Toronto homicide detective has admitted to obstructing justice and stealing drugs from two active homicide cases, according to courtroom testimony and police records reviewed by CBC News.

CBC News reviewed more than 50 criminal cases over the past five years where judges found that police officers had given false or misleading testimony, and the case against the accused fell apart.

The Canada Border Services Agency investigated 1,200 allegations against its own staff over a two and a half year period starting in January 2016, including accusations of criminal association, excessive force and sexual assault, documents obtained by CBC News through an access to information request show.