Canada on Wednesday issued a travel warning asking its citizens to avoid "non-essential" travel to Iran, hours after Iran launched missile attacks on US-led forces in Iraq.
The statement from the Canadian government cited the ongoing volatile security situation, the regional threat of "terrorism" and the risk of arbitrary detention.
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"Canadians, particularly dual Canadian-Iranian citizens, are at risk of being arbitrarily questioned, arrested and detained," the warning reads.
Canada also asked its citizens to "avoid all travel" to the area within 10 kilometers (six miles) of Iran's border with Iraq.
Iran's attack came in retaliation for a US drone strike on former commander of Iran's elite Quds Force Maj. Gen. Qassem Soleimani, whose killing has raised fears of a war in the Middle East.
The Canadian travel warning was issued hours after 63 Canadian citizens died aboard a Ukrainian passenger aircraft that crashed shortly after taking off from Tehran early Wednesday morning.