Police are searching for a man who they say attacked a female subway conductor in Brooklyn last month.

Investigators say Enrique Tirado, 38, seen above, sprayed a conductor on the 4 train conductor with an unknown chemical agent at the Sterling Street station just before 4 p.m. on Sunday, October 21.

Police do not believe he knew the woman but have not released a possible motive for the attack.

Tirado is about 5-feet-8-inches tall and weighs about 170 pounds.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.