Security forces on Tuesday arrested Yosef Spinoza on suspicion that he was involved with alleged Jewish terrorist Ya'acov Teitel.
Spinoza, Teitel's neighbor at the Shvut Rahel settlement, was initially detained two weeks ago after his association with Teitel came to light, but he was released after just a few hours.
He was taken in by the Shin Bet (Israel Security Agency) again on Tuesday on suspicion of collaborating with Teitel, but it was not clear in what capacity.
Spinoza, 47, is a father of two. Police on Tuesday refused to allow Spinoza's lawyers to meet with him, and his remand is expected to be extended on Wednesday.
The police and Shin Bet announced on Sunday that they had arrested Teitel, 35, on October 7 on suspicion of carrying out a series of deadly terrorist shootings and bombings over a dozen years, in which two Palestinians were killed and left-wing academic Prof. Ze'ev Sternhell and Ariel teenager Ami Ortiz were wounded.
At first, police insisted that Teitel, who made aliya from the US, had carried out the attacks alone. But they later acknowledged that when Teitel was arrested, he had been hanging Hebrew flyers in Jerusalem's Har Nof neighborhood, for which he must have had help since he could not read or write Hebrew.
The flyers praised "the black bear" for an attack on a Tel Aviv gay youth club on August 1 in which two young people were killed. It was not clear whether this was a reference to the murderer (who is still at large) or an underground organization.
According to his attorney, Avi Keidar, Teitel underwent a psychiatric evaluation in Petah Tikva on Tuesday and was deemed to be fit to stand trial.