Authorities expect 2,000 to 3,000 people to attend today's funeral of Sacramento County sheriff's Detective Vu Nguyen.
Among them will be a handful of Modesto Police Department officers and 25 members of the Stanislaus County Sheriff's Department, including Sheriff Adam Christianson.
Sheriff's department spokesman Royjindar Singh said at least one person from each county law enforcement agency is expected to attend.
Services for Nguyen, who grew up in Modesto, will be at 11 a.m. today at the Cathedral of the Blessed Sacrament, 1017 11th St., Sacramento.
Members of the public can view the service through a live video feed at the Sacramento Convention Center at 1400 J St., Sacramento County sheriff's spokesman Sgt. Tim Curran said.
A large funeral procession will travel through town -- south on 12th Street to L Street, then west on L to Ninth Street. The procession continues south on Ninth Street, east on N Street to Folsom Boulevard and along Folsom to 43rd Street, the entrance of East Lawn Memorial Park.
There, family members will attend a private burial.
Officials said the procession may last two hours and is expected to cause daylong traffic delays.
City police ask for the public to cooperate with motorists going westbound through the city taking I Street, and those going eastbound using P Street.
Parking is prohibited around the cathedral, the Capitol and the Convention Center. J Street will be closed from 10:30 to 11 a.m., and N Street and Folsom Boulevard will have delays from 1:30 to 4 p.m.
Nguyen, a seven-year veteran of the department, was shot Dec. 19 while on duty in south Sacramento. Jimmy Siakasorn, 16, has been charged with murder and will be tried as an adult.
Sheriff's officials have set up a trust fund for the family of Nguyen, who was married earlier this year. Donations can be sent to Stockmans Bank, 9340 Stockton Blvd., Elk Grove 95624.