EgyptAir Flight 804 en route to Cairo from Paris has suddenly disappeared from the radar on Thursday.

There were 59 passengers and 10 crew members who were onboard when the incident took place. EgyptAir confirmed the news, saying the plane took off from Charles De Gaulle Airport, Paris, just after 11:00 p.m. local time. Washington Times stated that the plane was last tracked flying over Greece. “Egyptian aviation authorities [have] raised the alert level at Cairo airport,” Sky News Arabia reported.

The airline updated the information on Twitter. “An informed source at EgyptAir stated that Flight no MS804, which departed Paris at 23:09 (CEST), heading to Cairo has disappeared from radar.”

According to reports, the Islamic State group, along with its allied extremist companions, have been recently attacking the transportation channels of both France and Egypt. This incident, therefore, is expected as one of those activities.

Former Transportation Department’s Inspector General Mary Schiavo told CNN that the plane did not fly over any war zone and hence the disappearance was possibly because of a “mechanical failure or possible nefarious activity.”

In March, EgyptAir was in the news as Flight MS181 flying between Alexandria and Cairo was hijacked and made to land in Larcana, Cyprus. The act was suspected to be one of the IS acts, but speculations were later found to be untrue. One man was arrested after the event and all passengers and crew members came out of the place unharmed.

This is a developing story. More details will be added once new information becomes available.