A Waseca teenager has been charged after plotting to kill his family and then go on rampage at Waseca High School, setting off bombs and gunning down students, according to reports.
Police arrested the 17-year-old Tuesday night after the Bloomington bomb squad executed searches at his home and storage facility in Waseca in connection with small explosive devices that were found on the playground of Hartley Elementary School in March.
The criminal complaint against the teen said he planned to shoot and kill his mother, father and sister in their home, then light a fire in a field to distract authorities before detonating bombs inside Waseca Junior and Senior High School, KEYC says.
Police say the teen planned to carry out an attack on his family and the school in the coming weeks and kept a 180-page notebook with detailed plans for how he was going to use the explosives, firearms and ammunition he had acquired, some of them stolen from relatives, WCCO reports.
In the notebook, police say the teen referenced the Columbine, Virginia Tech and Sandy Hook school shootings and he idolized the Columbine shooters, the Mankato Free Press reports. Police say he intended to carry out the attack on the April 20 anniversary of the Columbine school shooting, but it fell on a Sunday this year, the newspaper says.
The complaint says he hoped to kill or maim as many students as possible.
The criminal complaint says that the teenager admitted that the explosives found at the elementary school in March were his, according to KEYC. He detonated them around town to practice for his plot, the complaint says.
The teenager was charged Thursday with four counts of attempted premeditated first-degree murder, two counts of first-degree damage to property and six counts of possession of a bomb by someone under 18, the Star Tribune reports.
Police say the teen has been cooperative since his arrest.
He was sent to a juvenile detention center in Red Wing after his court appearance Thursday. His next hearing is scheduled for May 12, the newspaper says.
During a news conference on Thursday, police said an observant citizen noticed the teen hanging out at the storage unit and called police. Police said she stopped a major tragedy.