"While serving the warrant, officers located a large gun safe containing two illegal assault rifles and thousands of rounds of ammunition," a news release from the Pleasanton Police Department said. "The safe belongs to Cody's father, Aaron Hall, who is a twice-convicted felon and is therefore prohibited from possessing any firearms."
The locked gun safe was in the garage of the home. Inside the safe, police also seized four Daytrana patches that Aaron Hall had without a prescription, according to court documents. Daytrana is stimulant used to treat ADHD.
Aaron Hall has two prior felony convictions, but information about those cases, from 1993 and 1994, was not immediately available.
Investigators served the warrant on June 30, two weeks after Hersevoort died. They forwarded their case to the D.A.'s office, which filed felony charges of possession of a firearm by a convicted felon, possession of an assault weapon, possession of ammunition by a felon, and possession of a non-narcotic controlled substance.
Police obtained a $640,000 arrest warrant for Hall, who turned himself in July 11. He was booked at the Santa Rita Jail, where he posted a reduced bond of $265,000 and was released the same day.
An arraignment is set for July 24 at Pleasanton Superior Court.
Cody Hall was not charged, but the case involving Hersevoort's death remains under investigation by the Police Department's traffic division.
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