Three Michigan teens planned to commit mass murder by shooting up two local schools in October, but officials were tipped off and the plot was disrupted, police said Saturday.

Ryan Stevens, 18, Lamar Dukes, 15, and Cody Brewer, 15, were each charged with conspiracy to commit first-degree premeditated murder and false report or threat of terrorism, according to FOX66. All three have been arraigned and charged as adults.

“There were potential targets at the high school and the middle school. From what we gathered they didn’t really care who else got in the way either"

- Daniel Allen, police chief

A school resource officer in the Linden school district received information about the plot on Oct. 28 and filed a 24-page report to the Argentine Township Police, which was then given to the FBI, Argentine Police Chief Daniel Allen said. The alleged plan was to be carried out on Oct. 30 at Linden High School and Linden Middle School.

“After I reviewed it, I felt all the information there was credible and we just had to track down the individuals that were involved,” Allen told MLive.com. “There were potential targets at the high school and the middle school. From what we gathered they didn’t really care who else got in the way either.”

Authorities first apprehended Stevens, a former Linden Community Schools student. After looking at Stevens’ phone, officials linked Dukes and Brewer to the threat, MLive.com reported.

“The information that we obtained – they had access to weapons and were credible threats,” Allen said.

Interim Superintendent Russ Ciesielski said in a statement the schools never went into a “secure-mode” or “lockdown” scenario.

“After becoming aware of the information, we worked with law enforcement, and within our district’s emergency procedures, to ensure the safety of our students and staff,” Ciesielski said in the statement published on WXYZ. “The quick actions of our administrative staff, and law enforcement officials, helped to keep our schools out of harm’s way.”

Argentine Township is about 66 miles northwest of Detroit.