There may be a Canadian connection to a terrorist bombing in Riyadh Monday that killed at least 25 people and injured some 200 others.

Saudi authorities believe there is a direct connection between the Riyadh attack and a gun fight between 19 al Qaeda operatives and police on May 6. Authorities ended up seizing a large weapons cache but failed to catch the men.

The 19 include 17 Saudis, a Yemeni and an Iraqi with Kuwaiti and Canadian citizenship.

The Canadian was identified by Saudi officials as Abdul-Rahman Mansour Jabarah, 23, a former resident of St. Catharines, Ont. He immigrated to Canada from his native Kuwait in 1994.[...]