UNINVITED GUEST Fox 4 Dallas-Fort Worth
Karmelo Anthony's family was slated to address the teen's murder charge at a news conference roughly an hour ago -- but they put a pause on the proceedings ... as the father of the boy who Anthony allegedly killed unexpectedly showed up to the event.
The tense scene just unfolded minutes ago at Next Generation Action Network's headquarters in Dallas ... when Austin Metcalf's father, Jeff Metcalf, surprisingly appeared among media members just minutes before the Anthonys were about to speak.
Reportedly, NGAN officials -- who are helping represent Karmelo in his criminal case -- did not want to have the Metcalfs and Anthonys in the same room .