San Bernardino County sheriff's spokeswoman Jodi Miller tells the Victorville Daily Press (http://bit.ly/omPgZ4) that a fight broke out during the Victorville house party and guests began moving into the street.
Moments later, at about 2:30 a.m. Sunday, a gunman opened fire.
Authorities say the gunman has eluded capture. It's unclear what sparked the violence.
The wounded 16-year-old girl was taken to a hospital, where she died.
A 19-year-old female and four males, ages 17, 18, 20 and 30, are hospitalized with non-life-threatening wounds.