WASHINGTON (AP) – Presumptive Republican presidential nominee Donald Trump is weighing in on the crash of an EgyptAir flight that had been traveling from Paris to Cairo, calling it “yet another terrorist attack.”

In a Twitter post Thursday, Trump pointed to the incident, asking “when will we get tough, smart and vigilant? Great hate and sickness!”

The flight, with 66 passengers and crew on board, crashed in the Mediterranean Sea off the Greek island of Crete early Thursday morning.

Egyptian, French and Greek officials have launched investigations into the crash but say it is too early to determine whether it was due to a technical error or an act of terrorism.