Five people are dead after a gunman went on a killing spree through a northern Californian town on Tuesday morning.
The unnamed gunman was eventually killed by police at the Rancho Tehama Elementary School in northern California where he opened fire on students and staff as parents dropped off their children at around 8am.
He killed at least four people and injured numerous others before he was shoot at the school which was his final stop on a deadly drive through the town.
The shooting spree began at 7.52am at an address in the town where he shot several residents.
Witnesses said one man died in his driveway as a result of the first round of bullets. Neighbors there say they had been complaining for weeks about the gunman, who lived on the street, firing his gun late at night and early in the morning.
From there, the gunman is believed to have used a stolen truck to travel to the school where he injured at least three children and one adult before being brought down.
On his way, he opened fire on a woman and her daughter who was in a Ford truck on the main road leading in to the town. Both were taken to hospital along with three children and an adult from the school.
At the school, the gunman fired between 90 and 100 rounds with a semi-automatic rifle and two handguns before he was brought down, according to witnesses nearby.
Three children were injured including a six-year-old, according to witnesses who said the child was shot twice. Their conditions are not known.
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Five people are dead after a shooting across Rancho Tehama, California, on Tuesday. Above, a taped-off road in the town after the gunman was killed by police at an elementary school. The truck of a woman and her child who were shot is pictured abandoned at the scene
At least two children at Rancho Tehama Elementary School were shot. It is not known whether those killed were children or adults
According to KHSLTV and neighbors, the shooter was known to police and was out on bail for stabbing a female neighbor when he committed the killings on Tuesday.
Temaha County Sheriff's Deputies are still grappling with the facts and have confirmed that they are working across seven different crime scenes where they believe the gunman attacked.
Multiple students were airlifted to hospital it is not yet known of those killed were children or adults.
One six-year-old child was shot twice and another, whose age is not known, was shot in the leg, according to USA Today local affiliate the Record Searchlight.
Witnesses described hearing 'hundreds' of rounds as the shooting unfolded. Another, who lives near the school, described hearing children screaming.
'We heard multiple shots, starting with about 10, and proceeding to about 90 shots, of a high powered some kind of rifle sounding.
'We heard a man and children screaming from my location, I'm about three blocks from the school, I could hear people screaming at the school,' one witness, who gave her name only as Tiffany, told ABC affiliate KRCTV.
In an impromptu press conference by the side of the road, sheriff's deputy Phil Johnston gave a timeline of the horror.
The vehicle of a woman and her child who were shot on Rancho Tehama Road by the gunman. They were both taken to hospital
There was a large police presence on the road leading into the town on Tuesday morning
Video courtesy of KRCTV
'This morning at 7.52am, we received multiple 911 calls of a shooting that occurred at Bobcat Lane which is in the upper end of the Rancho Tehama Reserve.
'That resulted in multiple 911 calls of multiple different shooting sites including the elementary school.
'It was very clear in the early onset that we had a subject that was randomly picking targets,' he said.
One man who lives on the street where the shooting began claims it was his roommate who was killed.
'I got a call to say the person who stays in my house had been shot.
'I drove home and the police have everything blocked off. I heard there was a shooting and I'm getting more information that my other neighbors were shot.
'My truck was stolen and used today in the crime and it's terrible,' Brian Flint told KHSLTV.
The man added that the gunman was 'crazy' and that he was on bond for stabbing one of his female neighbors.
'As far as we know he was crazy. He shoots a lot of gunshots at night, in the morning. Like a hundred rounds,' he said.
He claimed to have called police numerous times to report the man for shooting his gun late at night and early in the morning.
He also said the female victim of the apparent stabbing was the wife of a neighbor who the gunman was fighting with.
Rancho Tehama is around 120 miles north of Sacramento and sits between the towns of Red Bluff and Corning.