From Wednesday's Globe and Mail:

Diplomats in Pakistan are investigating a report that two Canadian militants were killed by a possible U.S. missile attack that blew up a house in a remote tribal region of the country.

Canadian Foreign Affairs officials, in conjunction with other agencies, are working with Pakistan to determine the identities of men killed Saturday after villagers said they saw U.S. Predator drones in southern Waziristan.

As many as five suspected militants died in the attack, including two Arabs, Pakistan-based reporters said.

Pakistan's Dawn news service specified that the ranks of the dead included “two Canadians of Arab origin.”

Last month, Ted Gistaro, a senior U.S. analyst of terrorist threats, warned that al-Qaeda operatives from “North America” are training in Pakistan to attack the United States.

In a speech in Washington on Aug. 12, Mr. Gistaro suggested that Canadian passport holders are among the biggest threats.

“Al-Qaeda has strengthened its safe haven in Pakistan's Federally Administered Tribal Areas,” Mr. Gistaro said.

He is a 20-year U.S. Central Intelligence Agency analyst and is now the chief national intelligence officer for transnational threats.

The tribal areas encompass North and South Waziristan.

Mr. Gistaro said al-Qaeda operatives include “North American and European citizens and legal residents with passports that allow them to travel to the United States without a U.S. visa.”