The U.N. force in Lebanon says authorities have taken into custody one of the mission's Lebanese employees on suspicion of spying for Israel.

The force, known as UNIFIL, says in a statement Wednesday that after reviewing the information provided by authorities, the U.N. Secretary-General Ban Ki-moon has determined that the allegations against the staffer do not appear to be related to his official functions.

On Tuesday, a military prosecutor charged three people for conspiring with Israel.

The U.N. employee is the fourth person that is being investigated but has not been charged yet because of the special permission that was needed from UNIFIL.

Lebanon and Israel technically remain at war, and more than 100 people in Lebanon have been arrested since 2009 on suspicion of collaborating with the Jewish state.