Created: 08/15/2014 12:43 PM WHEC.com
By: Associated Press
Embattled "Meet the Press" moderator David Gregory is tweeting that he is leaving NBC.
In tweets posted Thursday afternoon, Gregory said he is leaving the network as he arrived at it, "humbled and grateful."
"Meet the Press" has fallen to third place since he took it over in 2008. His departure had been rumored for months.