NORTH COAST, Calif. — The Sonoma County Sheriff's Office said it has arrested two suspects from Hidden Valley Lake and Santa Rosa as part of its investigation into a violent home invasion robbery in Sonoma earlier this month.

Hugo Alexander Matamoros-Acosta, 20, of Hidden Valley Lake, and Sincere Nasir Rush Tanner, 22, of Santa Rosa, were taken into custody in the case, the agency said.

Authorities said the home invasion occurred at approximately 4:14 a.m. Sept. 12 in the 3000 block of Wood Valley Road in Sonoma. 

Deputies responded to reports of an armed robbery where masked subjects, armed with firearms, forcibly entered a residence and restrained three victims, two of them being elderly, officials said.

The subjects threatened the victims, demanding valuables and, during the incident, one of the robbers struck a victim over the head with a blunt object, resulting in injury. The subjects fled the scene with stolen items.

Following the incident, detectives from the Sonoma County Sheriff’s Violent Crimes Unit were dispatched to the scene and assumed responsibility for the investigation, the agency said.

Based on the information they gathered, detectives were able to track down Matamoros-Acosta and Tanner at Twin Pine Casino in Middletown, the report said. 

During the execution of a search warrant, the sheriff’s office said detectives recovered a firearm in Rush Tanner's car that they suspect was used in the robbery. 

Both suspects were arrested and booked into the Sonoma County Main Adult Detention Facility on multiple charges.

Rush Tanner is being held on $1 million bail for felony charges including elder abuse, kidnapping to commit robbery, vehicle theft, altering a firearm ID number, first-degree robbery, assault with a deadly weapon, possession of a large-capacity magazine and conspiracy.

Matamoros-Acosta is being held on $1,031,000 bail for felony charges including elder abuse, kidnapping to commit robbery, vehicle theft, first-degree robbery, assault with a deadly weapon and conspiracy, and a misdemeanor violation of probation.

Both remain in custody.

Court records show both Matamoros-Acosta and Rush Tanner were arraigned on Sept. 16 and are due to return to court on Oct. 7 to enter their pleas.

Detectives from the Violent Crimes Unit are actively investigating this incident to identify all those involved. Anyone with information about this incident to contact the Sonoma County Sheriff’s Office at 707-565-2185, or submit an anonymous tip through the agency’s website.