An early morning fight Sunday in front of Cross Street Market in Federal Hill sent a 24-year-old man to the hospital with a slashed artery in his lower back, police said.

The man's alleged attacker, 22-year-old Pasadena resident Leonus Matthews, was arrested for first and second-degree assault after stepping in to assist a family member who was originally fighting with the victim, police said.

"The bars had let out. People had too much to drink. Tensions ran high. There was an altercation," said Detective Nicole Monroe, a Baltimore City Police spokeswoman.

"I don't know the catalyst of the fight," said Monroe. "There was a disagreement between two people. [Matthews] intervened and stabbed someone."

Matthews lives in the 4000 block of Brummel Road in Pasadena, Monroe said. The victim was taken to a local hospital with non-life-threatening injuries. He remained hospitalized Sunday night.