(KGTV) - A 17-year-old high school student was arrested after he allegedly threatened to carry out a shooting at his school, and sheriff's officials said numerous weapons and ammunition magazines were seized from his home.
According to Los Angeles County sheriff's officials, deputies were summoned to investigate a report of criminal threats made at El Camino High School in South Whittier last Friday -- two days after a shooting at a Florida high school left 17 people dead.
Sheriff's officials said a campus security officer overheard the student threatening a school shooting "sometime in the next three weeks." The boy was apparently arguing with a teacher over a set of headphones when he allegedly made the threat.
The student, who officials said had "an extensive discipline history at the school," was eventually arrested on suspicion of making criminal threats.
A Norwalk La Mirada School District attorney noted that the boy said he was joking when he made the shooting remarks.
A search warrant was executed at the boy's Norwalk home, and deputies discovered two AR-15 assault rifles, two handguns and 90 high-capacity ammunition magazines in the house, according to sheriff's officials. A Smith & Wesson semiautomatic firearm was also registered to the home.
The boy's brother, a 28-year-old Army veteran identified as Daniel Barcenas, told sheriff's officials that the weapons belonged to him. However, sheriff's officials said only one of the AR-15 was registered to the older brother.
The boy's brother was arrested for having an un-registered assault weapon, importing of high-capacity magazines, criminal storage of firearms and failure to register a personal handgun.