Police said the robber waived a large machete and threatened the fisherman's life.
Police said DUI charges would be requested against the motorist.
Police said the juvenile was offered drugs and alcohol in exchange for sex.
The new charge stems from the suspect's arrest in Napa last February after he crashed into five parked cars.
Stolen alcohol from another area supermarket was also found in the vehicle, police said.
Pot was growing on Robert Louis Stevenson State Park land in Sonoma County, state parks officials said.
For a few anxious minutes, Napa Police feared that someone had fired a gun as they began their search.
Prosecutors said the child was between 5 and 11 at the time of the molestations.
Separate medical and fire alarm calls within an hour resulted in a suspect's arrest.
The distraught man tried to throw his bike at a vehicle, police said.
Detectives are working to solve this case.
The standoff closed a street and caused the evacuation of at least one nearby business.
A 36-year-old transient man is linked to a series of stolen vehicle incidents, AmCan police reported.
The arrests followed a report of possible shots being fired outside Napa.
The thieves fled through the store's stock room, police said.
NSIB detectives used social media to arrange drug buys.
Police said they confiscated an AR-15 with removed serial numbers after a chase.
The crash of a pickup truck into a power pole Saturday night led to the shutdown of Coombsville Road in Napa, according to police.
A lawsuit alleges a Silverado Resort manager lured two young women to the Valley, resulting in the death of one of them.
Police said the guns were accessible to a child at the residence.