Bodies dropping at the gear down point are unfortunately a routine event in MIA for flights arriving from Latin America.
Sometimes, the stowaway survives in a few rare cases, probably on the 1-2 hour flights. At my airline at a few Latin American destinations, a security vehicle follows us until airborne.
Legend has it years ago, a B727 FE noticed the aft cargo light come on and then go out just as they were ready to enter the active runway for takeoff one night from a down south destination. Word was an 'inside job' took place as a few million dollars of a cash shipment was in that aft cargo and was 'liberated', and spirited off the grounds of a dark airport area.