A Colville judge sentenced an 11-year-old boy to three to four years in juvenile detention today for his role in plotting to kill a girl in his class.

COLVILLE — Calling the trial “the most serious of my career,” a Stevens County Superior Judge found the 11-year-old Fort Colville Elementary student who plotted to kill a female classmate earlier this year guilty of conspiring to commit first-degree murder.

An 11-year-old boy sat in a Stevens County courtroom Thursday, plying a rubber band between his hands as lawyers tangled over admitting a handgun and knife as evidence the gradeschooler conspired to rape and murder a female classmate in February "because she was annoying."

The attorney for an 11-year-old Colville boy accused of plotting to rape and kill a classmate filed a motion today to have the boy’s competency evaluated. Stevens County Prosecutor Tim Rasmussen said the motion was granted and the boy will be evaluated by doctors at Eastern State Hospital. The tests will evaluate the boy’s ability to stand trial and his sanity.