"To the best of my knowledge, yes […] With all that I know so far, I have not been told anything else other than that she is believed to be alive", Canadian Prime Minister Justin Trudeau said Friday in response to a reporter's question, as quoted by AFP.
According to AFP, Blais and Tacchetto were working on a reforestation project with aid group Zion'Gaia. Local investigators have not determined the circumstances of the disappearance; however, a senior Canadian official told AFP on condition of anonymity that it could have been a robbery gone awry and they could have been victims of kidnapping.
"All options are being explored […] We are doing everything we can", Canadian International Development Minister Marie-Claude Bibeau told reporters after meeting on Friday with Blais' family in Quebec province, AFP reported.
Last week, Burkina Faso authorities prolonged the state of emergency in several northern provinces over increased activities of Islamist groups in the region. The state of emergency was declared by a decree of Burkina Faso President Roch Marc Christian Kabore on 31 December.
Most recently, at least 12 civilians were killed and two injured in a terror attack last week in the Soum province, located in the north of Burkina Faso, according to the country's Security Ministry. The assailants burned down a grain warehouse, a cart and six shops and took five motorcycles and a lot of bulls with them.
The government of Burkina Faso has also accused terror groups of inciting ethnic tensions via such attacks on civilians.