HIGHLAND (CBSLA)  — Three people were shot, one fatally, at a house party in Highland Friday evening.

Authorities were called to a home in the 7500 block of Weaver Street just before 11:20 p.m. after a report of shots fired.

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Upon arrival, deputies learned shots rang out during a large party attended by about 200 people. They were also told the three victims had already been transported by friends to a nearby hospital.

While a 16-year-old male was being transported, his friends flagged down an ambulance. Paramedics got the teen to the hospital where he was pronounced dead. The deceased was a resident of Rialto, according to the San Bernardino Sheriff’s Department.

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Officials said the two other people wounded (a 22-year-old male from San Bernardino and a 16-year-old female from Rialto) suffered non-life threatening injuries.  The female had a graze wound and was treated and released.

Investigators learned the party had been advertised on social media. Witnesses told investigators a verbal altercation ensued and it escalated into gun violence.

The suspect remains at large.

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Authorities are asking anyone who attended the party and left before deputies arrived, to please call the Specialized Investigations Division, Detective Floyd Stone at (909) 387-3589 or Sheriff’s dispatch at (909) 387-8313. Callers can remain anonymous and contact WeTip at (800)78-CRIME or the WeTip website.