A Florida college student has been charged with leading a retail shipping fraud scam that included nearly 10,000 phony returns and at least $3.5 million in lost product, according to the Department of Justice (DOJ).

Matthew Frederic Bergwall, 21, was a University of Miami student when he allegedly ran the scheme that helped net him and others items such as a $41,000 Rolex President Day-Date watch, $600 electric skateboard, $350 Samsung Smart TV and $80 Reebok shoes, the DOJ said in a statement.

Bergwall, also known as “MXB,” orchestrated the crimes from December 2021 to April 2022, according to the DOJ, which said he ran a service that allowed online retail customers to enter bogus tracking information on packages.