This is on San Mortiz Avenue near El Redondo Drive in Merced.
Just before 1:30 a.m. Sunday morning, officers received a call reporting about 20 shots fired.
Minutes later, three people with gunshot wounds arrived at Mercy hospital.
One of the victims was critically injured and was taken to a trauma center.
Officers say the home where the shooting took place was also hit several times with gunfire.
San Moritz Avenue is closed and will not re-open for several hours as officers begin their investigation.
Anyone with information is asked to call Merced police.
Stay with ABC30 for the latest details on this developing story.