Albuquerque police made four arrests and said they have potential ties to a Mexican drug cartel.Albuquerque police's central narcotics units seized 45,000 fentanyl pills, a pound of methamphetamine, $45,000 in cash and over a dozen firearms and 3,000 rounds of ammunition.Narcotics detectives had several undercover transactions with Gary Merino-Ramirez, who went by the nickname "Demon."Merino-Ramirez introduced undercover detectives to their primary supplier Reynaldo Vargas, who went by "Gumby." He was described as the main person who runs the Albuquerque drug trade, according to Albuquerque police.The federal Drug Enforcement Agency assisted police in the arrests.Albuquerque Police Department police Chief Harold Medina thanked federal agents for helping his department with the arrests and seizures."Today’s bust is the result of many hours of investigation and partnerships between APD’s narcotics detectives and our partners from the DEA, DEA Task Force members, our Electronic Support Unit, and the Gun Violence Reduction Unit,” Medina said. “We also had support from Sandoval County’s K-9 Unit. This was an amazing team effort that helps us keep the pressure on the criminals who are driving drug trafficking and gun violence in the Metro area.”Merino-Ramirez, Vargas, Ashley Lucas and Oscar Maytorena-Barrera are all facing federal drug trafficking charges along with weapons charges. Maytorena-Barrera has potential affiliations to the Sinaloa Cartel in Mexico, according to APD.He was arrested near a Walmart at San Mateo Boulevard and Claremont Avenue NE. Maytorena-Barrera was in possession of thousands of fentanyl pills and a loaded handgun that was reported as stolen.A total of 15 firearms were seized by police, including two listed as stolen.