A man was slashed on an N,Q or R train Friday, police said. View Full Caption DNAinfo/Michael Ip

MIDTOWN — A man was slashed on the face and hand Friday morning after bumping into another straphanger on an uptown subway during rush hour, police said.

The 60-year-old victim was on the N, Q or R train when he knocked into another man at the 57th Street-7th Avenue station about 8:30 a.m., police said. The NYPD could not specify the train on which the attack occurred.

"There was an exchange of words, and the man produced what was described as a small pocketknife," an NYPD spokeswoman said.

The assailant slashed the victim across the left side of his face and left hand before fleeing along 57th Street, police said.

The victim waited to get off until the next stop and called the police from his office. He was taken to Lenox Hill Hospital with minor injuries.

No arrests have been made. The suspect is described as in his mid 40s.

A spate of slashings has hit headlines this year after 24-year-old Amanda Morris was randomly attacked as she walked to work in Chelsea on Jan. 6.

Kari Bazemore, 41, was arrested the next day, and is awaiting trial for three street attacks on women over a two-week period.

Since then, a 30-year-old man had to get 150 stitches after a random assault in the East Village, a busboy at Silver Spurs diner in the Greenwich Village was cut in the face by teen who was bothering customers and a 71-year-old woman who was cut in the face on the D train at the Bleecker Street stop.