Three French defence officials and two other people died when a surveillance plane crashed shortly after take-off at Malta International Airport.
There was no explosion prior to the crash, according to eyewitnesses.
Malta said the flight had been part of a French operation to track illicit trafficking of people and drugs.
An investigation into the causes of the crash is to be conducted by the French defence ministry.
The airport has re-opened with some disruption expected to the day’s scheduled flights.
French Defence Minister Jean-Yves Le Drian confirmed that three of the victims were ministry staff while the other two were contractors.
Early reports that the victims had been officials from the EU’s border agency were quickly denied. Frontex said none of its staff had been involved.
The Maltese government said the flight had been due to return to the island within hours without landing in third countries.
Eyewitnesses told the Times of Malta the plane had taken off before turning on its side and going “straight down into the ground”.
Eyewitness Ed de Gaetano said: “Our plane was just about to take off, and there was a massive explosion on the right hand side of the plane.
“It’s pretty scary, a lot of commotion in the plane and everyone was wondering what was going on.”
Video shot from another plane at the airport shows flames and thick black smoke billowing from the site of the crash, next to the runway.
All of the victims’ remains have been found, the Maltese government said.
Image copyright Reuters Image caption The airport remains closed and an investigation has begun.