Three teenagers from South Texas have been arrested for serious crimes including human smuggling and possession of illegally modified firearms. Alan Ronaldo Zamarron, 17, was charged with making terroristic threats and illegal drug possession after he allegedly sent threatening messages via social media while brandishing a 9mm pistol. Adrian Velasquez, 18, was arrested for evading police and possession of a Glock handgun modified to fire automatically, which he displayed in a parking lot. Additionally, Luis Gerardo Paz, 17, was apprehended on a warrant related to a human smuggling incident following a rollover crash involving migrants. The arrests reflect ongoing concerns regarding youth involvement in gun violence and smuggling activities in border regions. Authorities are urging the community to report any similar threats or incidents.