Police in Britain are questioning six people arrested on suspicion of terrorism following Thursday’s deadly attack on a synagogue in Manchester that left two people dead.

The suspect, Jihad Al-Shamie, 35, was shot dead by police outside the Heaton Park Congregation Synagogue after he rammed his car into pedestrians, stabbed several people, and tried to storm the building during Yom Kippur, Judaism’s holiest day.

Two worshippers — Melvin Cravitz, 66, and Adrian Daulby, 53 — were killed in the attack.

Police said Daulby was accidentally shot by an armed officer as he and others tried to barricade the synagogue to stop Al-Shamie from entering. Three other men remain hospitalized with serious injuries.

Authorities said Al-Shamie, a British citizen of Syrian origin, was wearing a fake explosives belt and may have been influenced by extremist Islamist ideology. He had been out on bail over an alleged rape case but had not been charged.

Six suspects, three men and three women aged between 18 and their 60s, were detained across Greater Manchester as investigators work to determine whether Al-Shamie acted alone.

The attack has rattled Britain’s Jewish community and reignited debate over antisemitism and pro-Palestinian activism. Antisemitic incidents have risen sharply since the Israel-Hamas war began last year, according to the Community Security Trust.

Chief Rabbi Ephraim Mirvis blamed an “unrelenting wave of Jew hatred” both online and on the streets.

Prime Minister Keir Starmer urged restraint and asked protest organizers to postpone demonstrations planned for the weekend, saying they should “recognize and respect the grief of British Jews.”

Police in London also called for the cancellation of a protest against the government’s recent ban on Palestine Action, now listed as a terrorist organization. But organizers said the rally would go ahead, while expressing sympathy for victims of the synagogue attack.