Israeli jets scrambled to intercept a drone that crossed into Israeli airspace Saturday from the Mediterranean Sea, bringing it down without incident in the south of the country, a military spokeswoman said.

Lt. Col. Avital Leibovich said Israeli systems on the ground alerted the air force to the drone Saturday morning. She said it flew over the Gaza Strip but did not originate from the Palestinian territory. She said Israel didn't know the drone's starting point and an investigation was under way. Nobody was hurt in the incident.

Leibovich did not give more details, but Israel media reported that it might have been an intelligence gathering drone and was not carrying explosives.

Leibovich said the operation was successful and the military was in control throughout.

"We had monitoring contact from the ground and from the air. We alerted jet planes that escorted the unmanned aerial vehicle and due to some operational considerations we decided to intercept the unmanned aerial vehicle in the northern Negev area, which has no population, Leibovich said.

It's not the first time that Israel has shot down drones entering its airspace. The Iran-backed Lebanese militia Hezbollah has launched several into Israel over the past few years.

In the 2006 war, Hezbollah launched an Iranian-made drone capable of carrying explosives into Israel that was shot down. Another one launched two years earlier crashed in the Mediterranean.

Israel and Iran are bitter enemies and tensions are high over Tehran's nuclear program, which the West believes is intended for atomic weapons. Tehran insists its atomic program is for peaceful purposes only.

Israel has hinted that military action should be taken to prevent Iran from getting nuclear bombs.

Leibovich would not elaborate how the unmanned vehicle was brought down. She said troops were searching for debris from the drone.

Defense Minister Ehud Barak congratulated the military.

"We view this incident of attempting to enter Israeli airspace very severely and we will consider our response later," he said in a statement.