A Lebanese man on Sunday crossed the border fence into Israel from the Fatima Gate area in south Lebanon, the Lebanese National News Agency said.

"After he crossed some distance inside the occupied territories, a van arrived and took him deeper into Israel," NNA said.

The Lebanese Army, security forces and UNIFIL peacekeepers immediately encircled the infiltration area.

"Investigations showed that the citizen who crossed the border fence is A.M., 25, who hails from (the southern town of) Habboush," the news agency said.

"This is the second time that he crosses the border fence and he had been considered mentally disturbed after his first crossing," NNA noted.

Al-Jadeed TV said Lebanese security agencies are communicating with UNIFIL in a bid to return the man to Lebanon.

The man had been returned to Lebanon via UNIFIL after the first incident in April 2017. He had been identified back then as Ali Mrad.

In a 2017 TV interview, the man's father said his son had psychological problems.

Asked whether Ali had told him that he intended to cross into Israel, the father said: “Yes, my son had told me that.”

“My son used to say that he is of Jewish origin. Can you imagine a normal person saying this?” the father added.