No one will be convicted or otherwise held accountable for the 2015 shootout between rival biker gangs in Waco restaurant parking lot that left nine people dead and at least 20 injured.

The last person jailed in connection with a deadly biker shootout was poised to be released more than five months after authorities rounded up 177 people from the crime scene.

Police were on alert Monday for any retaliatory attacks after a chaotic shootout between rival biker gangs left nine people dead and at least 18 more wounded outside a Texas restaurant.