Updated at 12:15 p.m. with information from a building management letter.
A man was taken to a local hospital early Sunday after an argument turned violent, Fort Worth police said.
The shooting happened around 3:15 a.m. at The Phoenix Apartments at 429 College Ave.
According to police at the scene, a woman's ex-boyfriend was trying to get into an apartment gate while arguing with her.
At some point, police say her brother got involved in the argument and allegedly shot the ex-boyfriend.
Police said the shooting was possibly in self-defense. The shooter has been taken into custody.
Officials could not say what the man's condition was at the hospital. However, in a letter WFAA obtained that was sent to tenants, building management said one person was killed in the incident.
The letter also said no residents were injured in the "domestic altercation."