Police are investigating the mysterious deaths of two people and two cats found dead inside a Berkeley apartment.
The San Francisco Chronicle reports Berkeley police were called to the scene Monday after someone found one of the bodies.
Berkeley Police spokesman Officer Byron White says police found the second body and the two pets.
He says the cause of death was not apparent and that the building was evacuated and the street shut down as a precaution.
Deputy Fire Chief Dave Brannigan says firefighters, a Pacific Gas & Electric crew and members of a hazardous-materials team ruled out hazardous causes, including carbon monoxide poisoning.