The guy cut off his girlfriend’s leg to make it easier to dispose of her body
Mexican chap decided he’d had enough of his 23 year old girlfriend so he strangled her to death. Fortunately for him, some workmen had been installing some sort of cooling system at the house next door and had a hole already dug. UNfortunately for him, it was too small to accommodate his now-dead girlfriend.
So he went to work on her legs with a machete in order to play a little Mexican Tetris and started dropping parts into the hole.
