Francisco Serna, 73, was shot by the Bakersfield Police Department early Monday morning in an officer-involved shooting. 

In an interview with 23ABC, the Serna family spoke about Francisco Serna's struggle with Alzheimer's and dementia.

"He started having these breakthrough behaviors in September, October of 16 and they had a security system in home and my dad was having delusions and so he set the alarm off a couple times, called the police saying I was kidnapped or my daughter was," said Laura Serna. 

According to the Alzheimer’s Association, people with dementia also tend to wander around and can become disoriented, possibly putting themselves in dangerous situations.

Even just days before BPD shot Francisco Serna, his son Frank Serna told him not to walk around during the early hours of the morning. 

"I said, hey you need to stay in the house. He said, well I have trouble sleeping so that medication it helps me but not enough, so he’ll walk," Frank Serna said.

The Alzheimer’s Association says families can protect their family members with dementia by keeping a close eye on them and never leaving them home alone.