Hayward police on Friday said they arrested a 25-year-old man on suspicion of killing his father.
The investigation began when officers were asked to do a welfare check on Oct. 23 after the father did not show up to work and was not answering phone calls.
Officers went to the 2000 block of American Avenue to do the check, but they said no one answered the door. Police said they were able to go inside to check once they learned the son was on formal probation that included a search clause…