Greta Van Susteren is leaving Fox News effective immediately

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Greta Van Susteren, one of the top anchors on Fox News for the past decade, is leaving the cable news channel, effective immediately.

The stunning announcement was made by Fox News on Tuesday morning. No reason for her exit was given.

Van Susteren has been the host of the 7 p.m. hour, called “On the Record.”

Former 6 p.m. host Brit Hume will take over the time slot temporarily.

“I am happy to take on this assignment for the balance of this extraordinary election,” Hume said in a statement.

Van Susteren was not quoted in the statement.