President Andrés Manuel López Obrador said Tuesday there is cooperation between the US and Mexico following the killing of two Americans in a border city, and that the countries are "working in a coordinated manner with respect to sovereignty."
The discovery of the Americans’ whereabouts Tuesday came after four friends were abducted at gunpoint in Matamoros on Friday in what is believed to be a case of mistaken identity.
López Obrador noted, though, that "of course, we are not allowing any foreign country to intervene on matters that only relate to Mexicans."
"We do not get involved in seeing what the gangs in the United States that distribute fentanyl are doing or how the drug is distributed in the United States," he said at his daily news conference in Mexico City.
"This is our business," he continued, "and, furthermore, President Biden has offered me that they are going to be respectful of our sovereignty, and that is appreciated."
Mexican sovereignty has been a longstanding talking point for López Obrador, as he's debated the US on issues including security cooperation.
Later on Tuesday, López Obrador's handpicked security secretary said at a news conference that Mexican authorities were in "constant communication" with the US authorities, including the US Ambassador to Mexico Ken Salazar, as the investigation and search for the kidnapped Americans unfolded.
Investigators believe the Americans were targeted by a Mexican cartel that likely mistook them for Haitian drug smugglers, a US official told CNN.