Ari Melber To Take Over Greta Van Susteren's MSNBC Timeslot

Just hours after Greta Van Susteren revealed she is leaving MSNBC, the network announced it was naming Ari Melber to take over her timeslot. Van Susteren had only been at MSNBC for six months, following a long stint on the Fox News Channel.

Here is the official MSNBC announcement: