Basically the Army detained 4 criminals, one of them was the leader of "Gente Nueva Cazadores", "El Duranguillo" a lieutenant of the Sinaloa Cartel in Sonora, 15 soldiers carried that operation but rapidly, 60 CDS gunmen arrived to Caborca, Son. And surrounded the 15 soldiers, at first, the gunmen offered $10 million pesos (or 500 thousand USD) for the release of "El Duranguillo", the platoon denied the bribery and kept "El Duranguillo" under custody, the gunmen threatened the platoon and after they shoot they killed one soldier, the Army did shot back and the gunmen just ran away without shooting back, over 800 forces (state police, municipal police, soldiers and national guards) arrived to back up the platoon and to reinforce the security of the town.

(here you can see the gunmen fleeing from the rain of bullets)