At least 181 passengers have been reported killed, after a military plane crashed near the Boufarik airbase outside the Algerian capital, Algiers, according to the local Ennahar television station.
The plane, an Ilyushin Il-76, was carrying 259 people, local reports said.
Ennahar TV quoted an Algerian ruling party official as saying that 26 people onboard are members of the Polisario Front, a separatist movement in West Sahara — a territory also claimed by Morocco.
Algerie24, a local news website, said the plane was heading to the western Algerian city of Bechar.
Images posted on an Algerian website showed thick smoke billowing from the site of the crash, as several people rushed to help.