The defense secretary’s told Mexican security officials the U.S. was ready to take unilateral action against the country’s drug cartels.

The Wall Street Journal (paywall), citing sources briefed on discussions during the Jan. 31 call, on Friday wrote that the alleged threat stemmed from U.S. concerns over the Mexican government’s alleged links with drug cartels.

The United States has threatened Mexico with military action if it does not manage the drug cartels effectively. Pentagon chief Pete Hegseth stated that if Mexico does not address the collusion between its government and drug cartels,

Defense Secretary Pete Hegseth suggested on a call with leaders in Mexico last month that U.S. military action inside their country was on the table if they did not take on drug cartels, according to a report published Friday.

Defense Secretary Pete Hegseth reportedly warned Mexican officials last month that the US military was ready to take “unilateral action” against Mexico’s drug cartels if more isn’t done to stem the flow of fentanyl and migrants into the US.