Sebastian Bailey VillaseƱor 'was fixated on school shootings' and had researched police response times, said police, who said they seized 11 firearms.
Sebastian Villasenor, 18, has been arrested for allegedly planning to shoot up Ontario Christian High School in California around the time of the anniversary of the Columbine massacre in April.
Ontario Police Chief Michael Lorenz said authorities have arrested student Sebastian Villasenor, 18, after their investigation found that he had been plotting to carry out a school shooting at Ontario Christian High School in Southern California.
Ontario Christian High School senior Sebastian Villasenor was charged with five counts of attempted murder and one count of attempted criminal threats.