Deputy Chief Mark Saunders speaks at a news conference in Toronto on Tuesday. A mysterious tunnel discovered in Toronto near one of the venues for this summer's Pan American Games contained a rosary with a crucifix and poppy. Police said there is nothing to suggest the tunnel was linked to criminal activity.
A partially frozen American Falls in sub-freezing temperatures is seen in Niagara Falls, Ontario, on Tuesday. Temperature dropped to 6 degrees Fahrenheit on Tuesday. The National Weather Service has issued a wind chill warning for western New York from midnight Wednesday to Friday.
Trucks move containers at the Port of Long Beach in California on Tuesday. Contract negotiations between dockworkers and shipping companies have led to a slowdown on the piers.
Jae C. Hong/AP
In this photo provided by Britain's Royal Air Force, taken Oct. 29, 2014, a Russian military long-range bomber aircraft photographed by an intercepting RAF Typhoon flies in international airspace.