MANCHESTER, England (AP) — One of the two Jewish men killed in a car and knife attack on a synagogue in the English city of Manchester appears to have been accidentally shot by a police officer, according to detectives who said Friday that the attacker may have been motivated by Islamic extremism.

Police said congregant Adrian Daulby, 53, and security guard Melvin Cravitz, 66, died trying to prevent Thursday's attack on the Heaton Park Congregation Synagogue on Yom Kippur , the holiest day in the Jewish calendar. Three other people are hospitalized in serious condition.

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