Mexican President Claudia Sheinbaum responded sharply Thursday to U.S. government sanctions to block transfers from three Mexican financial institutions, saying Washington hasn't shown evidence of its allegations of money laundering.

Mexican financial authorities said Thursday that they are taking over two small local banks and a brokerage firm that were identified by the U.S. Treasury Department as being involved in money laundering and facilitating payments for precursors used to make fentanyl.