Did the border patrol officer say it was rocks as well or could it have been a sot drug runner from some cartel of Mexico?
For all we know, could have been a guy shot by a coyote or by the drug cartels who was scared to say that.
How do we verify the story one way or another?
In any case, why should we really care?
At least he went back to Mexico and didn't wind up on the taxpayers dime in a San Diego hospital.