Russian and Egyptian officials say terrorism was the most likely cause of the disappearance of EgyptAir flight MS804, which went missing in the Mediterranean Sea while on its way from Paris to Cairo. 

The search for the Airbus 320 is ongoing this morning. The flight was carrying 66 people.

Presumptive GOP nominee Donald Trump said the incident looks like "another terrorist attack."

Russian intelligence officials are saying they believe this was a terrorist attack, Benjamin Hall said on Fox and Friends.

The airline has a history of hijackings and mechanical issues. The aircraft reportedly made several sudden swerves before disappearing from radar. 

Speaking from Cairo, Egyptian Minister of Aviation Sherif Fathy said the AirBus 320, which left Charles de Gaulle Airport at 11:09 p.m. local time Wednesday and was due in Cairo at 3:15 a.m., "vanished."

"I'm not excluding any theory," Fathy said. “I’m also going to use the term ‘vanished’ plane until we find the wreckage of the plane -- if there is any wreckage -- and until we know what happened for sure.

“There are hypotheses and theories about what happened, but we want to be professional," he said. "We have to make sure we find out where the plane is and then we can start to do our job of determining the cause of this incident."

Terrorism expert Dr. Sebastian Gorka said this morning that for terror groups, Egypt is a top target.

Gorka said an Egyptian plane going from Paris to Cairo would be a "symbolic" target for a jihadist.

A Russian passenger plane was blown out of the sky over the Sinai Peninsula last year. 

The Russian plane crashed in Sinai on Oct. 31, killing all 224 people on board.

Moscow said it was brought down by an explosive device, and a local branch of the extremist Islamic State group (ISIS) has claimed responsibility for planting it.

'It's Enraging': Hegseth Rips Obama Admin's 'Hypocrisy, Deception' on Iran Deal

Keane: Baghdad Bombings Represent a 'Change in Focus' for ISIS

Judge Nap on Senate's 9/11 Bill: 'Why Are the Saudis Being Protected?'