Juan Martinez was stabbed to death in the Back of the Yards neighborhood Saturday afternoon.
Martinez, 40, was standing with his girlfriend in the 2000 block of West 47th Street when a man the couple knew confronted them about 4:10 p.m. Saturday, authorities said.
During the confrontation, the 39-year-old man pulled out a knife and stabbed Martinez multiple times, authorities said.
Martinez, of the 4600 block of North Central Park Avenue, died at Mount Sinai Hospital less than an hour later, according to the Cook County medical examiner's office.
Martinez' girlfriend was not injured, authorities said.
Police said the attacker is in custody and charges were pending Sunday afternoon.
-- Sun-Times Media Wire