(CNBC) — U.S. stocks turned lower on Wednesday, following the S&P 500's biggest jump in a year, as investors considered the fatal shooting of a soldier in Ottawa, reports of gunfire in the halls of Canada's Parliament and oil falling to a more-than two-year low.
A military guard died after getting shot at the National War Memorial in Ottawa, with multiple rounds then reportedly fired at the adjacent Parliament building. The gunfire followed increased worry about terrorist attacks in Canada, where a radical jihadist ran over two soldiers in a suburb of Montreal on Monday, killing one.
"It hits close to home, and with everything going on in the world, perhaps it's a contributor," Stephen Carl, head equity trader at the Williams Capital Group, said of the situation in Canada's capital, where lawmakers reportedly had barricaded themselves in their offices.
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