Stefon Diggs' flashy Mercedes-Benz G-Wagon was found abandoned near train tracks in Miami over the weekend, TMZ Sports has learned ... but the NFL star is denying any wrongdoing in the situation.
Here's the deal ... law enforcement officials tell us they responded to a call of an abandoned vehicle sitting in dirt just feet from train tracks near the Miami Airport Station in Florida at around 5 AM on Sunday.
According to officials, the car -- a silver Mercedes-Benz G-Class SUV with Maryland license plates -- was registered to Diggs.