The killings appeared to mark an expansion of a war between the Sinaloa cartel , led by the reputed drug lord Joaquin -LRB- El Chapo -RRB- Guzman Loera in alliance with Ismael -LRB- El Mayo -RRB- Zambada and Mexico 's Gulf and Tijuana drug cartels .
Mexico
Sinaloa
/location/location/contains
Sinaloa
Mexico
/location/administrative_division/country
Mexico
Sinaloa
/location/country/administrative_divisions
Mexico
Tijuana
/location/location/contains
LOCATION
Sinaloa
PERSON
Joaquin
LOCATION
Mexico
LOCATION
Tijuana