The incident happened at the Hovley Gardens apartment complex at 74-501 42nd Ave.
Deputies were called to the scene just before noon on Friday, where they found three shooting victims.
A 2-year-old girl was airlifted to an area hospital in critical condition, but later died. A 24-year-old man also died in the shooting.
A 43-year-old woman, possibly the man's mother, was also taken to an area hospital and listed in serious condition.
Police arrested a suspect, but his identity was not released.
A family member said the male victim got into an argument with the suspect on Friday.
City News Service contributed to this report.