Group says drone had 5.5 kilo of C4 explosives; Hezbollah militants killed in Israeli strike on Syria were childhood friends.
Produced by UVision, the Hero-120 has a range of 40km and can carry a 3.5kg warhead
The Defense Ministry developed the drone to enable the IDF to control and disperse crowds via non-violent means.
Yatom says the Iranian drone Israel shot down was an exact replica of a US drone that fell in Iran.
Iran, Hezbollah and others have increasingly used drones – a technology significantly promoted by both the US and Israel.
The new version of the IDF’s Skylark will be able to fly further and send back higher-resolution pictures.
The IDF “has not developed a complete response” and “needs to immediately carry out more preparatory work” to address the issue.
Upgrades would bring the drone to the scale of the high-altitude long-range Global Hawk drone.
Hermes 900 "Kochav" drone had its first flight during Operation Protective Edge in 2014 over the skies of the Gaza Strip.
Incident marks the Sixth crash of a Sky Rider drone this year