Israeli prosecutors plan to charge relatives of a Palestinian terrorist who carried out a deadly stabbing attack inside a settlement home last month with failing to prevent a crime, police spokesperson Luba Samri says.

Authorities say the parents, two brothers and uncle of Omar al-Abed knew of his plans shortly before he sneaked into the settlement of Halamish and stabbed three people to death in a home as they held a family celebration.

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They have all been arrested since the July 21 attack, including two brought in on Sunday.

A pre-indictment filing allowing police to continue holding the suspects is expected today, Samri says.

“The family members did not act and did not take real action to stop the attack and did not report it to any Israeli or Palestinian authorities,” Samri says in the statement.