In 2003 the notorious Guasave Aztecas XIII, led by Ismael “Shadow” Barajas began to push their way into becoming the most feared organisation in Sinaloa. Known for their ruthlessness, the group was suspected to be the cause of over 300 deaths in the space of a three years, 50 of which were Police Officers.  The group focused on extortion, gambling along with drug and Weapon distribution, with many members targeting other gangs in order to secure different turfs that they could operate from.