(CNN) – A group of family and friends gathered in a backyard on Sunday to watch a football game when an armed man approached and started shooting, killing four people and injuring six others, according to Fresno authorities , California.
Between 35 and 40 people were in the house, including several children, when the suspect, who remains loose, began firing at the crowd, according to police.
The lifeguards arrived at the house around 8 pm after receiving multiple calls to 911 and found "three people down" and several gunshot wounds, Fresno police deputy chief Michael Reid told reporters. Officers immediately began performing first aidRELATED
There were no immediate indications that the suspect knew the victims, according to Reid.
The four men who died were between 25 and 30, according to Reid. Three of them were pronounced dead at the scene. The other was transported to the Regional Medical Center of the Community, where he died from his injuries.
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Five additional victims were taken to the medical center with gunshot wounds that do not threaten his life, Reid said. Another man was taken to a different hospital where he is being treated for a friction wound.
"My heart is with the families that are victims of this senseless violence," said Reid. "We will do our best to discover who the perpetrators are and bring them to justice."
There was no information available about the suspect or descriptions of the suspect's vehicle, Fresno police lieutenant Bill Dooley said in a previous briefing.
Police go door to door in search of surveillance images that can help the investigation and witnesses who may have information about the suspect, according to Dooley.
There was no history of service calls at the house where the shooting occurred, Reid said.
News in development.
Jeremy Grisham and Christine Sever of CNN contributed to this report.