A Jacksonville mother was arrested Monday in Riviera Beach after leaving her three children alone in a tractor-trailer with a loaded gun, police said.
Riviera Beach police officers responded Sept. 8 to a truck stop where the rig had been parked at a gas pump for three hours, with no adults nearby.
Authorities said a 16-year-old boy rolled down the window and told officers he could not move the truck. A 5-year-old girl was also seen near the cab, and a 20-month-old girl remained inside the truck…