April 22 (Reuters) - Canada's main stock index opened

higher on Wednesday with broad-based gains after U.S. President

Donald Trump said he would extend the Iran ceasefire

indefinitely, even as reports of gunfire attacks on container

ships in the Strait of Hormuz kept investors cautious.

At 09:33 a.m. ET, the Toronto Stock Exchange's S&P/TSX

Composite Index was up 0.6% at 34,063.34 points.