The Standoff at Sparrow Creek (2019) - James Badge Dale, Chris Mulkey, Happy Anderson

[AlbertV]

A mass shooting at a police funeral. An AK-47 rifle is missing from a militia stash. Ex-cop Gannon realizes that the shooter must be one of the militia group he joined after leaving the police force. He decides to investigate and interrogate all members of his group to discover who the shooter is by forcing them to stay in their headquarters. Tensions rise as Gannon prepares to unveil the killer and bring him to the proper authorities before things unravel, which can result in copycat killings. 

The film comes out on January 18 in a limited theatrical release plus VOD and Digital HD.