On Sunday night, the man surrendered the child to officers at the Los Angeles Police Department Hollenbeck station. The boy was not harmed.
Police said the estranged father, 25-year-old Ernesto Suarez, showed up to take the boy from the home near New Haven Street and Sunland Boulevard about 12:30 p.m.
"The suspect grabbed the child from the mom and her brother," LAPD Officer Cleon Joseph said. "They tried to stop him and the suspect pointed a gun and fired at least one shot at the mother then fled."
City News Service contributed to this report.