Mexico State authorities are on edge after one improvised explosive device recently detonated inside a cathedral while several others were deactivated in popular shopping centers. No cartel has claimed responsibility for the devices.

Over the weekend, law enforcement agencies in Mexico State rushed to two shopping centers to remove and deactivate makeshift bombs, El Sol De Mexico reported. In the first case, the IED was left in the restrooms at the Mundo-E shopping center in Tlalnepantla. The second device was found at the Power Center store in Coacoalco. Police evacuated both centers and deployed bomb squads.

Last week, a similar device detonated inside the San Cristobal Cathedral in Ecatepec, Excelsior reported. The explosion did not cause any injuries and left minor damage to a section of the structure. These incidents follow similar cases where IEDs were deactivated in Mexico State at Walmart stores in December. Attorney general for Mexico State Alejandro Gomez Sanchez said authorities believed the Walmart bombs were tied to anarchists or disgruntled employees, El Sol de Mexico reported. Another angle being looked by law enforcement is a possible extortion scheme.

Ildefonso Ortiz is an award-winning journalist with Breitbart Texas. He co-founded the Cartel Chronicles project with Brandon Darby and Stephen K. Bannon. You can follow him on Twitter and on Facebook . He can be contacted at Iortiz@breitbart.com .

Brandon Darby is the managing director and editor-in-chief of Breitbart Texas. He co-founded the Cartel Chronicles project with Ildefonso Ortiz and Stephen K. Bannon. Follow him on Twitter and Facebook . He can be contacted at bdarby@breitbart.com .

Tony Aranda from the Cartel Chronicles project contributed to this report.