An Algerian transport plane with around 100 army personnel on board crashed on Wednesday shortly after taking off from an airbase outside the capital.
There was no immediate word on casualties after the plane went down near the Boufarik airbase.
According to an AFP photographer at the scene, thick black smoke rose from the wreckage of the plane which crashed in a field near the base.
Hundreds of ambulances and dozens of fire trucks with their sirens wailing rushed to the scene.
Around 100 military personnel were on board the Ilyushin Il-76 transport plane, a military source told AFP, asking not to be named.
Algeria has suffered a string of military and civilian aviation disasters.
Two military planes collided mid-flight in December 2012 during a training exercise in Tlemcen, in the far west of the country, killing the pilots of both planes.
In February 2014, 77 people died when a military plane carrying army personnel and family members crashed between Tamanrasset in southern Algeria and the eastern city of Constantine.
Only one person survived after the C-130 Hercules transport aircraft came down in the mountainous Oum El Bouaghi region.
The defence ministry blamed that crash on bad weather.
An Air Algerie passenger plane flying from Burkina Faso to Algiers crashed in northern Mali in July 2014, killing all 116 people on board including 54 French nationals.
In October the same year, a military plane crashed in the south of the country during a training exercise, killing the two men on board.
That came more than a decade after all but one of the 103 people on an Air Algerie Boeing 737-200 died in March 2003 when it crashed on takeoff in the country's south after an engine caught fire.