A person is in custody after a man was stabbed to death Sunday evening in a fight at the Beer Garden at Navy Pier.

The attacker was also stabbed and seriously wounded.

Police said at 5:30 p.m., a 56-year-old man got into an argument with a 64-year-old man he knew. The fight turned physical, and the older man stabbed the younger man multiple times, police said.

The victim was taken to Northwestern Memorial Hospital with multiple lacerations to his upper body. He died at the hospital, police said.

The attacker suffered a laceration to his chest, and was taken to the same hospital in serious condition, police said.

The attacker was also in police custody late Sunday. The suspect has not been identified. 

When CBS News Chicago arrived on the scene, an ambulance was pulling away, and the Beer Garden was taped off. There was also another chaotic crime scene at the Sable at Navy Pier Chicago Hotel.

Belmont Area detectives are investigating.