A woman is wanted for slashing a 41-year-old woman on the arm after an argument while on board the 4 train in Morris Heights.

The attack happened on the 4 train at the Burnside Avenue station on Feb. 3 at 8:15 a.m.

Police say the woman approached a 41-year-old woman and got into an argument.

Police say the woman pulled out a box cutter and slashed the 41-year-old in her left arm before running away.

The 41-year-old woman was taken to Bronx Care and is expected to be OK.

Investigators say the woman was last seen wearing a black hat, black jacket, grey sweatshirt and black sweatpants.

Anyone with information is asked to call the NYPD Crime Stoppers hotline at 1-800-577-TIPS (8477).