Three people are dead and two others wounded after a shooting at a school on Tuesday.
"That evolved to multiple victims and multiple shots at the school, the elementary school", he told Action News Now, a TV news channel in Northern California.
Police had also visited Neal's house a day before the shootings on a domestic violence call, authorities said, but gave no details.
But police said Tuesday's incident spanned multiple shooting scenes involving multiple victims, and that three deaths, including the shooter, stemmed from the shootings. More than 100 law enforcement officials were there dealing with five crime scenes.
Officials said they recovered a semi-automatic rifle and two handguns from the shooter.
The Rancho Tehama Sheriff said that the staff at the school placed the building on lockdown after hearing "a series of gunshots about a quarter mile away". Officials said they are actively searching for the shooter.
"The insane thing is the neighbor has been shooting a lot of bullets lately - hundreds of rounds, large magazines", Flint said. "We made it (known) that this guy is insane and he's been threatening us and everything like that".
Flint says he had been shooting "hundreds of rounds" from large magazines. "A number of students" were taken on a medevac from the area, Johnston said, and the school has been cleared. Ten people have been hospitalized, authorities say.
Gov. Jerry brown issued a statement on the shooting, saying: "Anne and I are saddened to hear about today's violence in Tehama County, which shockingly involved schoolchildren".