Working with Modesto police and Dublin police, Alameda County sheriff's deputies were able to help rescue a 6-year-old boy who allegedly had been abducted from Modesto by his father on Monday, a sheriff's spokesman said.

Investigators located the car of John Cosso, who allegedly had abducted his son Jayce Cosso, at the La Quinta Inn & Suites at 6275 Dublin Blvd. at about 8 a.m. Tuesday and set up surveillance on them, according to Alameda County sheriff's spokesman Sgt. Ray Kelly.

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.