Michael Lira, 19, and a 13-year-old boy are suspected of breaking into a home in the 900 block of West Avenue early Thursday morning.
The four residents woke to noise in the living room. One of the suspects allegedly brandished a handgun and both suspects allegedly confronted the victims with gang challenges, threatened the residents, and ordered the victims to give them money, police said.
One of the victims was injured when pistol-whipped, and a struggle broke out between the suspects and victims. One victim managed to escape and call 911, police said.
Officers responded at around 3:50 a.m. and saw a struggle occurring through a window. They forced entry into the home, detained two suspects and recovered the loaded handgun, police said.
According to police, one of the suspects allegedly refused to comply with officers' orders and was forced to the ground.
Lira and the 13-year-old boy, both Santa Rosa residents, were arrested on suspicion of residential robbery, assault with a deadly weapon, possession of a firearm, burglary, criminal threats, and two gang enhancements, police said.
The 13-year-old was taken to a hospital for minor injuries that occurred during the arrest process and was later taken to the Sonoma County Juvenile Justice Center, police said.
Lira was booked into Sonoma County Jail and bail was set at $500,000.