A teenager was arrested over the weekend in Nassau County, New York, after he was seen wearing a mask in public — the first arrest related to the county’s face covering ban signed earlier this month.

Wesslin Omar Ramirez Castillo, 18, of Hicksville, was arrested Sunday in Levittown after officers responded to reports regarding a “suspicious male” walking down Spindle Road dressed in black and “wearing a mask to conceal his identity,” Nassau County Police said.

A photo released by police showed him wearing a ski mask that covered his face but showed his eyes.

Ramirez Castillo allegedly “continued to display suspicious behavior while attempting to conceal a large bulge in his waistband” that ended up being a 14-inch knife, officials said.

Police said that officers stopped him and patted him down under the mask law and found the knife. Ramirez Castillo allegedly refused to comply with officer commands and was placed under arrest.