Jerusalem (CNN) -- Israeli military experts Sunday worked around the clock to examine the remains of a mysterious drone that was shot down after penetrating Israeli airspace from the Mediterranean Sea. The Israeli military announced Saturday that the unmanned aerial vehicle was shot down over the northern Negev Desert. They say the drone did not take off from Gaza, leading them to consider the possibility that it originated in Lebanon. Israeli security experts point the finger at Israel's longstanding rival Hezbollah, the Shiite militia based in southern Lebanon. "We know it originated in Lebanon," said Ron Ben Yishai, an Israeli national security and defense commentator for Israeli news portal Ynet. "It is entirely clear the UAV was sent by an Iranian proxy. The Iranians provided Hezbollah with their very first drones and they have also funded the organization."
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"We know it originated in Lebanon," an Israeli security analyst says
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Israel is investigating the craft's origin and hasn't pointed any fingers yet
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The drone was shot down over Israel's Negev Desert on Saturday
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The craft was several dozen miles from the top-secret Dimona nuclear plant
If @placeholder were responsible for the launch of the drone, flying it for more than 200 km (125 miles) down the Mediterranean and deep into Israel, that would represent a significant upgrade to its aerial capacities.