Medical examiners who performed an autopsy on Russia's ambassador to the United Nations said Tuesday that more tests are needed to determine how and why he fell ill in his office and later died at a hospital.

A year after a gang-related shooting outside of a restaurant in Chinatown left two people dead and three others wounded, police have charged a second suspect previously identified as the leader of a violent Toronto gang.

A veteran diplomat known as a potent and personable voice for his country's interests died suddenly after falling ill Monday in his office at the mission.