Violence is rising near the US-Mexico border — 'El Chapo' Guzmán's capture could be helping drive it
Ciudad Juarez Mexico killing violence drug war cartels
Ciudad Juarez Mexico killing violence drug war cartels

(Police investigators at a crime scene where seven bodies were found gunned down, in Ciudad Juarez, Mexico, November 25, 2008.REUTERS/Alejandro Bringas)

Homicides in Ciudad Juarez, a major Mexican city just across the border from El Paso, Texas, have ticked up in recent months.

The rising violence appears to be related to the changing cartel dynamics in part caused by the capture of Sinaloa cartel chief Joaquin 'El Chapo' Guzmán.

Cartel fighting from 2009 to 2011 drove homicide rates to astronomical levels in the city, but relative stability in the years after that had brought violence down.

In the 10 days after new Chihuahua state Gov. Javier Corral took office on October 4, the state saw at least 60 homicides, according to Mexican security analyst Alejandro Hope.

The 257 homicide cases recorded in Ciudad Juarez through the first eight months of this year are well ahead of 190 registered over the same period last year, and if the trend holds through September, it's likely the city will see more homicide cases through the first nine months of this year than in all of last year.

The city's 47 homicide cases seen in August 2016 were the most since the 53 of December 2013. Through the first 13 days of August this year, there reportedly were 23 organized-crime style homicides.

Homicides in Ciudad Juarez, 2012 to 2016
Homicides in Ciudad Juarez, 2012 to 2016

(Homicides in Ciudad Juarez have declined significantly since 2012, but have trended upward in recent months.Mexican government data)

At the state level, the number of homicide victims recorded in August, 136, was 22.5% higher than the 111 victims registered in August 2015. September, Hope says, will likely yield worse numbers.

The numbers are not the only callback to the dark days of 2009 to 2011, when the state topped 3,000 homicides each year. Grisly scenes have also returned.

"Three weeks ago, three people were riddled in a house in Ciudad Juarez; two were secondary students. Also in Juarez, only a week ago, killers opened fire in a bar and killed four individuals," Hope wrote in his October 17 column in Mexican newspaper El Universal.

In Chihuahua city, he added, two gunman killed a man in front of his wife.

But the upswing in killings did not arrive with Corral.

An October 2015 report from Insight Crime noted that while Chihuahua as a whole had seen a historically low number of homicide victims during the previous month, killings were concentrating in some areas.

In particular, in the municipalities of the rural Tarahumara highlands, which border Durango and Sinaloa states and make up part of the Golden Triangle, an area known for intense marijuana and opium cultivation. During September 2015, the sparsely populated Tarahumara area saw more homicides than Ciudad Juarez, home to more than a million people.