When the father and son came out of the motel a short time later, officers detained the father and safely took the son into protective custody, Kelly said.
"There was good collaboration and cooperation" between the officers from different agencies who worked together, Kelly said.
"Modesto police worked through the night, we did our little part and the Amber Alert system worked," Kelly said.
Modesto police is the lead agency in investigating the alleged abduction, Kelly said. John Cosso was taken into custody, but it remains unclear what charges he'll face, if any.
In other news
* Want a chance to get to know some of your Pleasanton police officers?
The department is offering just that on Wednesday morning by taking part in National "Coffee with a Cop" Day.
"There won't be any formal presentations or schedule of events. 'Coffee with a Cop' is designed to be an informal way to connect with law enforcement. Bring your questions and coffee cups; we're looking forward to it!" police said on the department's Facebook page.
The event will run from 7:30-9:30 a.m. at the Amador Center's Starbucks coffee shop, 1737 Santa Rita Road.
* Law enforcement agencies throughout the region have been working this week to ensure that children are riding safely in vehicles during Child Passenger Safety Week.
A particular focus for the California Highway Patrol during the week has been making sure that car seats are used properly, the agency said in a Facebook post.
"Children rely on their parents and caregivers to keep them safe during every single trip," CHP Commissioner Warren Stanley said. "The CHP will help you make sure you are using the right car seat, installed correctly. The consequences of misused or unused car seats can be disastrous."
In a nationwide study by the National Highway Traffic Safety Administration (NHTSA), two out of three car seats were misused, according to the CHP. The NHTSA also found that 2016 was the deadliest year for children under the age of 13 riding in vehicles.
The CHP's statewide child safety seat events run through this Saturday where child passenger safety technicians will provide safety seat inspections, education and hands-on training for parents and caregivers. A list of local events can be found at CHP-BayArea.Eventbrite.com
Free inspections are also available year-round, by appointment, at any CHP Area office.
* A vehicle fire on Interstate 580 between Santa Rita Road and El Charro Road on Sunday night spread to adjacent grass and to a nearby backyard fence, but was stopped short of threatening houses near the freeway, the Livermore Pleasanton Fire Department said.
The fire was called in to the CHP at 6:48 p.m. Sunday as a grass fire adjacent to the freeway, but it was soon evident that a Scion was on fire on the eastbound highway shoulder, said LPFD battalion chief Aaron Lacey. The car, he said, was "completely involved" and generated thick black smoke.
The grass fire, which Lacey said burned a 300-foot-by-20-foot patch along the freeway shoulder, also burned a fence in the backyard of a home in the 3600 block of Annis Circle a half mile west of El Charro Road. But Lacey said no houses in that tract were damaged by fire.
"The fire was moving toward the backyard of a residence with a wood pile and a shed," Lacey said. "Without quick action (by firefighters) it could have spread, but it probably would have taken a while."
No one in the burned car, nor any firefighters, were injured, Lacey said.
The fires created substantial backups on I-580 for almost two hours, mostly affecting eastbound traffic.
* Two people have been arrested on suspicion of felony arson in connection with a series of four vegetation fires that burned at least 17 acres and injured two firefighters over the last month, according to the San Ramon Valley Fire Protection District and East Bay Regional Park District police.
The most recent incidents were during a period of high fire danger on Sunday in San Ramon and Monday in Las Trampas Regional Wilderness. The first fire burned 7 acres and injured one firefighter. The second fire burned 6 acres near that same location.
Investigators working with the San Ramon Police Department identified a 39-year-old San Ramon man who was arrested at his home Monday evening. He was booked into Contra Costa County jail on $75,000 bail.
Another suspect, who has not been identified publicly, was arrested in two previous arson wildfires, according to San Ramon Valley Fire.
A two-alarm fire burned 4 acres and threatened homes in Danville on Aug. 29. One firefighter was injured, and Danville police arrested a suspect on suspicion of recklessly starting that fire. Two weeks later, that suspect was arrested a second time for starting a fire in the Blackhawk area on Sept. 16.
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