This may have been a trap.
The OFFICIAL Mexican story is that 30 cops and National guard were patrolling, when El Chapo's son fired on them from a house.
The cops and Guardsmen took him into custody, and the story after that is totally unclear.
Some reports say he was freed, and some say he's still in custody.
AT ANY RATE, there were photos and video of at least a dozen dead cartel gunmen.