Iran has built an advanced drone that can take off vertically and without a runway, Iranian media has reported.

Iran's military regularly announces defence and engineering developments, though some analysts are skeptical of the reliability of such reports.

Abbas Jam, researcher on a project for a vertical take-off and landing (VTOL) drone, said on Saturday that the drone would  be tested that day and "unveiled" next year, according to Iran's Mehr news agency.

The unmanned aircraft "enjoys ultra-advanced technology and has been built for the first time in the world," Jam said,  according to Mehr.

In October, Israel shot down a drone after it flew 55 km into Israel. The Lebanese militant group Hezbollah claimed responsibility for the aircraft, saying its parts had been manufactured in Iran and assembled in Lebanon.

Iranian Defense Minister Ahmad Vahidi said last month that  the downed drone did not use his country's latest technological  know-how, and that Iran possessed drones that are far more  advanced.

An Iranian legislator said last month that Iran holds pictures of Israeli bases and other restricted areas obtained  from the drone, although a senior Israeli military officer said  to the best of their knowledge the drone had not been equipped with a camera capable of transmitting photographs.