Two floors of a Manhattan apartment building were evacuated Monday after police discovered what they believe to be a meth lab inside, NBC 4 New York reports.

The NYPD responded to calls of a dispute at 431 West 54th in Hell’s Kitchen Monday night when they discovered a 3rd floor apartment with possible hazardous liquids inside.

The third and fourth floors of the building were evacuated, and the NYPD bomb squad was dispatched to deal with the possibly hazardous materials.

(Source: NBC New York)