In the second incident, Mr Serna approached two female neighbours in their driveway shortly after midnight and demanded to see inside their vehicle.
Sernas son said his father was showing the early signs of dementia and occasionally experienced delusions. The elder Serna also had difficulty sleeping and frequently went on late-night walks to tire himself out before bed, his son said.
Bakersfield police had visited Francisco Sernas home at least two times before because his father would become confused and activate a medical alarm, Rogelio Serna said.