Algeria's national airline, Air Algerie, says it has lost contact with one of its planes flying from Burkina Faso to Algiers across the Sahara.
Contact was lost about 50 minutes after take-off from Ouagadougou, the airline said.
The passenger airliner was last seen at 0155 GMT, it added. It should have landed at 0410.
Flight AH 5017 had 110 passengers and six crew on board, Spanish airline Swiftair, which owns the plane, said.
"In keeping with procedures, Air Algerie has launched its emergency plan," Air Algerie officials, quoted by APS news agency, said.
'Poor visibility'
The plane is operated by Air Algerie and chartered from Swiftair.
In a statement (in Spanish), Swiftair said that the aircraft was an MD83 and that they were unable to establish contact with the plane.
Comment: The PTB worldwide are desperate to maintain control of the masses, and are likely intentionally attempting to criminalize any activities that they see as threatening their power base.
Terrorists "R" Us
Authoritarian regimes (like the U.S. and Britain) treat reporters like terrorists
Journalists and anti-vax campaigners could be considered terrorists under UK Law
Shocking: Reporting factory farm abuses to be considered "Act of Terrorism" if new laws pass