( CNN ) -- Sniffer dogs will search an Oregon high school for explosives before students return from the Memorial Day weekend , because one of their classmates was planning to attack them with bombs , police said . The 1999 shooting spree at Colorado 's Columbine High School served as Grant Acord 's benchmark and inspiration , Benton County District Attorney John Haroldson said . But the prosecutor said the teen wanted to top Columbine in a planned attack at West Albany High School . With the help of explosive devices , checklists and diagrams , Acord 's `` goal was to model the Columbine shootings with some adjustments that would make it a greater success , '' Haroldson said . The prosecutor said police found six types of explosives in the 17-year-old 's possession after they arrested him Thursday night at his mother 's house in Albany , Oregon . They recovered napalm , pipe and drain cleaner bombs , as well as Molotov cocktails Friday from `` a secret compartment that had been created in the floorboards '' of the teen 's bedroom , Haroldson said . Albany police became suspicious after they `` received information that associated ... Acord with manufacturing a destructive device with the intent of detonating it at a school . '' West Albany High School 's principal , Susie Orsborn , sent a note to students ' parents , asking them to urge their children to come forward and speak with police if they knew anything about the plan . Acord , a juvenile , will be charged `` as an adult with attempted aggravated murder , '' Haroldson said . He will also face bomb-making charges and `` unlawful possession of a deadly weapon with intent to use against another person . '' He is scheduled to appear in court for the first time Tuesday . CNN is attempting to reach Acord 's attorney for comment . A woman who answered the door at the house believed to belong to Acord 's mother told CNN affiliate KATU that she has no comment . Albany police searched the school twice -- the first time on the night they arrested Acord . But state police want to conduct a more thorough search with dogs before students return to class . Sheriff : Student plotted TX college attack , fantasized about stabbings . Fifth-grade boys ' plot to kill a classmate thwarted . In January : Alabama teen free on bail after allegedly plotting 'terrorist attacks '
Police searched the school for explosives and are planning a second search . Prosecutor : " The suspect is in custody, but we don't know if he has any accomplices. The teen hid explosives in a secret floorboard compartment in his bedroom , the DA says . The bombs were made with napalm , drain cleaner and flammable liquids , authorities say .