The man who carried out a deadly attack on a Manchester synagogue made an emergency call to police during the rampage to “pledge allegiance” to the Islamic State group, UK counter terrorism police revealed Wednesday.

The attacker, identified as Jihad al-Shamie, 35, was shot dead by police within seven minutes of the terror attack, in which two Jewish people were killed — one likely by a stray police bullet.

But “in the initial stages of the attack… a call was made by the attacker to police claiming to pledge allegiance to the so-called Islamic State,” a spokesperson for Counter Terrorism Policing in northwest England said Wednesday.

Adrian Daulby, 53, and Melvin Cravitz, 66, were both killed, and three others were seriously wounded in Thursday’s attack in the northwestern city on Yom Kippur, the holiest day of the Jewish calendar.

The terror attack on Heaton Park Hebrew Congregation Synagogue was one of the worst antisemitic incidents in Europe since the October 7, 2023, onslaught in Israel led by Hamas-led terrorists.

Four people, two men and two women, remain in custody for questioning after the attack by Shamie, a UK citizen of Syrian descent.

The war against Hamas in Gaza has inflamed passions in Britain, with frequent pro-Palestinian, anti-Israel rallies in cities, which some politicians and critics allege have stoked antisemitism.

Police have acknowledged that they likely shot two people during their operation to halt the attack, one of whom died and one who received serious injuries.

A UK police watchdog is probing the police shooting of Shamie, as well as Daulby’s death after he died from a fatal gunshot wound.

The Independent Office for Police Conduct (IOPC) said there was no evidence anyone other than police used firearms at the scene.

The investigation “will include whether police may have caused or contributed to the death of the man later found to have suffered the fatal gunshot wound,” it said last week.

President Isaac Herzog’s office told The Times of Israel on Wednesday that he received “a heartfelt and reassuring letter” from the UK’s King Charles III, “reaffirming the King’s deep commitment to fighting antisemitism and standing with Jewish communities around the world.”

Herzog wrote to Charles days before the attack, raising concern over “the rise of antisemitism and anti-Israel hatred in the UK, and in other Commonwealth countries including Australia and Canada.”

According to the President’s Residence, the king wrote of “his deep sorrow and concern following the terror attack against the Jewish community in Manchester, and stressed that every Jewish person should be able to live without the threat of prejudice, discrimination, or fear.”

Herzog’s office said that King Charles shared Herzog’s letter with Australian, British, and Canadian leaders, who also pledged to fight antisemitism.

“The President noted His Majesty’s words were powerful and deeply appreciated,” his office said.

Times of Israel staff contributed to this report.