The incident happened at the Mira Bella Apartments on Marina Pointe Drive. The boy, identified as 4-year-old Niko Laurie, landed on a walkway below the apartment.
Paramedics took him to a hospital in critical condition. Coroner deputy chief Ed Winter said Lurie died Monday.
Police said initial investigation shows that it was a terrible accident. LAPD Sgt. Kevin Lowe says the boy fell from a bunk bed next to a window while playing a game with friends. The boy landed on concrete.
The incident remained under investigation.
