Two South Boston brothers were arrested Wednesday morning after police say they urinated on and beat a homeless man near the JFK T station in Dorchester.

State Police said Scott J. Leader, 38, and Steve M. Leader, 30, both of residences on Old Colony Avenue in South Boston, were on the way home from a Red Sox game when they assaulted a 58-year-old man who was asleep in a sleeping bag, beating him with a metal pole.

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The victim received treatment for a broken nose and bruises to his head and torso, according to police.

Scott Leader allegedly referred to the victim as an “illegal immigrant” and said police arrested the brothers because they were white.

Both brothers were aggressive in their jail cells, police said: “exposing themselves and urinating in the cell, challenging troopers to come into the cells to fight, banging on the cell door and making threatening and anti-immigration statements,” according to a release from State Police.

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The men faced a long list of charges: assault and battery with a dangerous weapon (the pole), assault and battery with a dangerous weapon (urine), assault and battery, assault and battery to intimidate with bodily injury, open and gross lewdness, indecent exposure, disorderly conduct, disturbing the peace and threatening to commit a crime.

Steve Leader also faced a charge of malicious destruction of property over $250.

The brothers were set to be arraigned Wednesday in Dorchester District Court.