What we know:
- 3 dead, including a 6-year-old boy, and 15 others injured in a shoot-out at the popular Gilroy Garlic Festival about 130 km southeast of San Francisco
- Gilroy police shot and quickly killed an armed man
- The late gunman was identified as Santino William Legan, 1
- Three people were killed and 15 more wounded after at least one Sunday night The shooter opened fire during the Gilroy Garlic Festival in Northern California, authorities said. The shootings also killed a suspect who brought hundreds of people in panic to safety.
Among the deceased victims was six-year-old Stephen Luciano Romero from San Jose. The conditions of the wounded ranged from critical to fair.
Gilroy Mayor Roland Velasco and Police Chief Scot Smithee hold a press conference on the shooting. Viewers can see it in the player above.
Smithee told reporters at a nightly meeting that Gilroy officials attacked and killed a suspect within a minute of ringing shots. CBS News has learned that he has been identified as Santino William Legan, 19.
Smithee said witnesses have told the authorities that at least one other person was involved in the shootings, but there was no confirmation or role that he or she could have played. He said that a search for the possible accomplice was underway.
According to CBS News law enforcement officials, the FBI was one of the many law enforcement officers at the scene who supported the Gilroy police and led the investigation.
Smithee said the suspect or suspect seemed to have cut a wire fence on a creek bordering the festival grounds to circumvent severe security measures and gain access.
There was no early word about a possible motive. Witnesses told CBS News that the shooter happened to shoot. Some witnesses said he had suddenly appeared behind a stage before he started shooting.
"It is simply unbelievably sad and daunting that an event that brings so much good to our church should suffer such a tragedy," added Smithee. 19659009] The filming took place on the last day of the annual three-day festival. It offers food, cooking competitions and music and attracts more than 100,000 people.
Gilroy, a city of 50,000, about 80 miles southeast of San Francisco, is known as the "Garlic Capital of the World." 19659021] Witness: "He just started shooting"
Cheryl Low and Candice Marquez worked on a stall at the festival. They told CBS This Morning on Monday that their bosses were shot and are currently in hospital, both of whom underwent surgery and are in stable condition.
They said that the shooter had a high-powered rifle and did not seem to be specific to humans. "No, no, just someone, he went back and forth," said Marquez.
"It was random," said Low. "He made a shot, then he put the clip in and he just started shooting and walking to our tent because most people were in this area and he just started shooting."
6-year-old killed; Mother and grandmother injured
A 6-year-old boy is one of the victims of Sunday's shooting. Stephen Romero attended the Gilroy Garlic Festival with his mother and grandmother for gunshot wounds in San Jose's Santa Clara Valley Medical Center. Stephens mother was reportedly shot in the belly and hand and his grandmother's leg.
Janet Shamlian of CBS News spoke to the boy's father in front of the hospital on Monday. He was not ready to say much, but called it the worst day of his life.
"Why are you doing this?"
The band Tin Man played an encore when shots broke out, reports CBS San Francisco.
Singer Jack van Breen said he saw a man wearing a green shirt and a gray handkerchief around his neck and dunking into the dining area with an apparent assault rifle.
Van Breen and other members of the band dived under the stage.
Van Breen told the broadcaster he heard someone shout, "Why are you doing this?" The person replied, "Because I'm really angry."
A festival visitor recorded a video of the band's set when filming began.
* WARNING: Possibly Worrying Footage *
Witnesses Describe Filming  A young boy told CBS San Francisco what was going through his head:
Another witness described how he heard what sounded as the shootout was going on, as "a semi-automatic trigger close up". "As soon as the gunfire started, everyone scattered and people screamed for their children," the witness told CBS San Francisco.
Another witness confused the shots with a piece of music. "I thought it was a prelude to the concert," he said.
Trump, candidates, legislators respond to gunfire
On Monday morning in Washington, during a formal signing ceremony in the White House Rose Garden, President Trump expressed his "deepest sorrow and grief" to the families of the victims. Mr. Trump called the shootings "horrific" and thanked the law enforcement agencies for their quick response.
"While the families spent time together at a local festival, a bad killer opened the fire and killed three innocent citizens, including a small child." the president said. "We mourn their families and ask that God comfort them with his abundant mercy and grace, and we pray for those who are recovering at the hospital."
Former Vice President Joe Biden, the leader of the 2020 Democratic presidential nomination, weighed on Twitter.
Fellow 2020 Democratic presidential candidate Sen. Kamala Harris of California, raised in East Bay and previously served as district attorney in San Francisco also tweeted about the shootings and called them "just terrible."
Californian Governor Gavin Newsom reiterated Harris's testimony and said the state supports the Gilroy community. "
ATF and FBI respond to gunfire from Gilroy
The ATF office in San Francisco responds to the report shooting, after a tweet The FBI is also helping.
The Gilroy police have set up reunification services
The Gilroy police have set up dedicated services Help dab e, to bring those who were at the Garlic Festival together with their relatives, including a telephone number and a reunification center at Gavilan College in Parking Lot B.