The Trump administration is threatening to withhold federal funding from the agency that runs the New York City subway if the Metropolitan Transportation Authority doesn’t comply with a request for information on transit crime.

Escalating a fight between the Metropolitan Transportation Authority and the Trump administration, Transportation Secretary Sean Duffy has threatened to withhold federal funding if the transit agency does not provide information on how it is addressing crime.

In a letter to MTA Chair Janno Lieber, U.S. Transportation Secretary Sean Duffy demanded a list of “actions and plans to reduce crime on its system,” including rates of assaults, fare evasion and train surfing in the subway.