Around 10:45 p.m. police reported to Garda Armored Car Service at 1650 Northpoint Parkway where suspects had locked victims behind steel doors at the business after robbing the armored car company.
The suspects were armed and left with an undisclosed amount of money, police said.
The suspects are at large.
Sonoma County Alliance has offered up to $2,500 in reward money for information leading to the arrest of the suspects.
Anyone with information regarding this case is encouraged to contact Detective Ryan Corcoran or Sgt. Steve Fraga at the Santa Rosa Police Department's Violent Crimes team at (707) 543-3590.