Family members identified the man as Tyler Honeycutt, a former UCLA basketball player who had a brief career with the Houston Rockets.
Overnight, Los Angeles Police Department SWAT officers went into the home and discovered the man's body, police said in a tweet shortly before 4 a.m.
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It's unclear how he died.
The barricade began about 5 p.m. Friday, when police received a call from the suspect's mother, who said her son was acting erratically.
When officers arrived at the home, near Riverside Drive and Tyrone Avenue, the suspect opened fire on them, authorities said.
Officers returned fire, and the suspect barricaded himself inside the home for several hours.
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No officers were injured in the shooting, authorities said.
At least 30 residents surrounding the home were evacuated as a precaution.
An investigation is ongoing.