OTTAWA -- A Canadian "dual national" living in Lebanon is believed to be involved in the deadly bus bombing in Bulgaria last July, Foreign Affairs Minister John Baird confirmed Tuesday.
But key questions remained unanswered as Canada coped with the second revelation by a foreign government in recent weeks that Canadians allegedly took part in terrorist attacks abroad.
Baird attempted to fill the information void by repeatedly calling on the European Union to ban the terrorist group Hezbollah, echoing Israel and the United States.
But that did little to prevent the minister from being peppered by questions about this latest incident in Bulgaria, which overshadowed a planned announcement of new measures to deter Canadian companies from bribing foreign officials.
Baird said the terror suspect had dual Canadian and Lebanese citizenship, but lived in Lebanon. He added the suspect is still at large, and it remains unclear when he was last in Canada.
"This is not a resident of Canada. It's a dual national who I am told resides in Lebanon," Baird told a news conference on Parliament Hill.
"I couldn't even tell you the last time this person was in Canada."
Bulgaria's interior minister suggested the suspect was much more active in Canada.
"We have followed their entire activities in Australia and Canada, so we have information about financing and their membership in Hezbollah," said Bulgarian Interior Minister Tsvetan Tsvetanov.
The suspect entered Bulgaria with a Canadian passport and is believed to be linked to Hezbollah, the Shiite militant group and political party Canada has designated a terrorist organization.
The suspect took part in an attack that killed five Israelis and their Bulgarian driver.
"We have well-grounded reasons to suggest that the two were members of the militant wing of Hezbollah," said Tsvetanov. "We expect the government of Lebanon to assist in the further investigation."
Hezbollah has denied involvement in the Bulgaria bombing.
Tuesday's disclosure comes as Ottawa has yet to corroborate a claim by Algeria that at least one Canadian was among terrorists who staged a deadly attack on a Saharan gas plant last month.
Baird -- who noted Canada has been working alongside the Bulgarian government in recent weeks -- said the co-operation from Bulgarian authorities has been markedly better than that from Algeria.
"We've had a more robust engagement with Bulgaria, and they provided more information," he said. "The situation in Algeria is just completely different. We don't even have a name, which is obviously of concern."
In the July attack in Bulgaria, a bomb exploded as the bus took a group of Israeli tourists from the airport to their hotel in the Black Sea resort of Burgas. The blast also killed the suspected bomber, a tall and lanky pale-skinned man wearing a baseball cap and dressed like a tourist.
NDP foreign affairs critic Paul Dewar said the government still has a lot of explaining to do to Canadians. He questioned whether the suicide bomber was in fact the suspected Canadian.
"It just begs the question of what's the followup from this government on it. This is on top of the situation in Algeria," said Dewar.
Baird, meanwhile, praised the Bulgarians for their investigative work and condemned the "depravity of Hezbollah."
Baird also took pains to align Canada with its close friend Israel in putting pressure on the European Union to join the U.S. and Canada in listing Hezbollah as a terrorist group.
"Obviously, we've been encouraging the European Union to list Hezbollah as a terrorist organization, something that Canada did some time ago."
Israeli Prime Minister Benjamin Netanyahu described the bombing as "an attack on European land against a member of the European Union," adding "we hope the Europeans learn the proper conclusions from this about the true character of Hezbollah."
Canada added Hezbollah to its list of terrorist entities in December 2002, which allows its assets to be seized. In late 2010, it emerged through online document leaker WikiLeaks that CSIS had responded to hints of possible terror operations by "vigorously harassing" known members of Hezbollah.
-- The Canadian Press, with files from AP