You have to read the article to find out who these "investigators" are:
The head of Russia’s Orthodox Church is launching an investigation into whether the last Czar of Russia, Nicholas II, and his family were victims of a ritual murder carried out by angry Jews in 1918, Church leaders revealed in a statement Tuesday.
"A large share of the church commission members have no doubts that the murder was ritual,” Father Tikhon Shevkunov, the Orthodox bishop heading the panel, told The Associated Press.
So a bunch of antisemites decided that a well-known murder was a "ritual Jewish murder" - whatever that means. And Newsweek calls these Jew-haters "investigators" as if they had the slightest interest in the truth.
Even the Moscow Times had a more reasonable headline:
Newsweek should be ashamed.