The low-flying plane, which terrified people in southern Bulgaria Monday, turned out to be an Israeli military Boeing 707 craft.

The news was reported by the Bulgarian National Radio, saying the flight was part of a joint Bulgarian-Israeli military training exercise.

A number of phone calls from terrified Bulgarians were received earlier on the emergency 112 hotline, notifying about a plane flying very low, possibly because it sustained damage.

They have said an Airbus was flying about 300 meters above the Trakiya Highway in southern Bulgaria and was attempting to land there. Other witnesses have reported seeing smoke coming from the aircraft.

On May 15, 2013, Bulgaria's caretaker government gave permission to Israeli planes and 100 Israeli servicemen to enter and stay in the country for the training named "Collector's Item."

Its first stage is from May 13 to June 9.

Boeing 707 has engines which blow large clouds of black smoke.

The official timetable of the Plovdiv airport shows that a Boeing 707 was scheduled to arrive at 12 noon Monday and to depart at 2 pm.

The Ministry of Defense has not yet issued an official statement.