A plot by a "disgruntled" student who was planning a mass shooting at a Southern California high school was thwarted after a security guard overheard a conversation, authorities said Tuesday.
The school is located in Whittier, about 20 miles east of Los Angeles.
"Deputies learned that the 17-year-old had an extensive discipline history at the school, " McDonnell said.
A few hours after Chavez raised the alarm, Los Angeles County sheriff's investigators found a cache of firearms, including two semiautomatic rifles, two handguns and 90 high-capacity magazines, at his home, reported the Los Angeles Times.
One AR-15 was registered to the older brother and the other was not registered, officials said.
The 17-year-old, who has not been named because he is a juvenile, has been arrested and faces a charge of making a criminal threat.
The teen's older brother, a U.S. Army veteran, told authorities he owned the firearms, and also has been arrested on suspicion of possessing an assault weapon, importing a high-capacity magazine, failing to register a handgun and criminal storage of firearms, McDonnell told KABC.
Robert Jacobsen, general counsel for Norwalk-La Mirada Unified School District, told the Whittier Daily News that the school safety officer heard the student threaten to bring a gun when he returned to the school.
The security officer notified school officials, who contacted the sheriff's department.
'He did say that he was just kidding, that he did not mean it, ' Chavez said.
McDonnell said that was the second serious threat at El Camino High School that week. Numerous campuses have been targeted and police in nearby Long Beach have increased their presence at schools.
"He was angry with the teacher's issue about his (earphones) in class and he was not allowed to go to her class the next day, so he was supposed to go to the office, " Chavez said.
It is the fourth time they will have met in a semi-final, the Czech winning all three previous encounters. Kvitova had reached the final by defeating Caroline Wozniacki 3-6, 7-6 (3), 7-5 in Saturday's semifinals.
The European Commission document comes amid ongoing negotiations on future relations between the EU and the UK. We want to maintain your access to markets across Europe , and beyond. "We are a nation of innovators".
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The mercenaries were apparently working for a private Russia-based military company called the Wagner Group. Was it local direction? "We'll work with obviously anyone who can answer that question". " Don't ask me.