A crude rocket has been fired by an Israeli student at a Palestinian village in the West Bank, Israeli security officials have said.
No-one was injured by the rocket, which was fired from a Jewish theological seminary in Yitzhar settlement.
The incident is being investigated by the Shin Bet security agency. No arrests have so far been made.
The use of home-made rockets is more usually associated with Palestinian groups firing into Israel from Gaza.
The incident is reported to have happened about two weeks ago but details have only just emerged.
The rocket landed in the area between the Palestinian village and Yitzhar.
According to the Maariv newspaper the students tried to cover their actions by telling neighbours that they were carrying out an experiment, and should not be alarmed by an explosion.
One of the students allegedly learned how to make the rocket - consisting of a launching device, a pipe, and explosives - on the internet.
He has now been expelled from the seminary, known as a yeshiva, Maariv said.
Israel and Palestinian militant groups in Gaza are observing a ceasefire, which came into effect on Thursday.
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