SOUTH PASADENA, Calif. - Authorities say two teens suspected of plotting a mass shooting at a suburban Los Angeles high school have been charged with making criminal threats against another boy.
Los Angeles County prosecutors filed Juvenile Court charges Wednesday against the 16- and 17-year-old boys, whose names were withheld because of their ages.
Authorities say additional charges are possible.
The teens were arrested Monday after police monitored their online activity and said detectives unraveled a plan to target three staffers at South Pasadena High School and kill as many students as possible.
Prosecutors contend that the teens shared their intent with another teen and later threatened to kill him.
Police say the pair researched automatic firearms, handguns, knives, explosives and tactical techniques.