THE BRONX - Authorities say a man allegedly assaulted two people on the A train after an argument.

Investigators say the suspect got into an argument with another passenger that quickly turned into a physical altercation.

It happened on the southbound A train back on May 5.

Authorities say another rider tried to intervene and the suspect began to punch and choke the bystander.

The suspect is described as about 35 years old, about 6 feet tall and weighs about 185 pounds.