Officers responded to a report of an attempted robbery at a home in the 100 block of Madison Avenue at about 1 a.m., police said.
The victims told the officers that the two suspects had entered their home through a rear sliding door but fled when the victims confronted them, according to police.
One of the suspects had a gun, according to the victims, but no one was injured.
The officers checked the area for the suspects, but neither were located. Witnesses said a black sedan left the area around the time of the incident.
Both suspects are described as about 25 years old and Asian. One is about 5 feet 10 inches tall with a thin build and short black hair. The other is about 5 feet 7 inches tall and also thin with short black hair.
Anyone with information on the incident is asked to call the Police Department at (650) 616-7100.