Police in the Los Angeles suburb of South Pasadena said Monday they had thwarted a mass shooting plot with the arrest of two teenagers who were conspiring to kill several staffers and as many fellow students as possible at their high school.

Detectives were tipped off to the plot by South Pasadena High School administrators and arrested the two students after serving search warrants at each of their homes, the South Pasadena Police Department said in a statement posted online.

"Enough evidence was discovered, and based on that evidence the two students were arrested," the statement said, though it did not identify the pair or make clear when they were taken into custody.