MONROE, Mich. (AP) — A 15-year-old southeastern Michigan boy accused of planning to kill a girl who spurned him and up to seven other students at his high school is staying in juvenile detention for now.

The Monroe News reports Probate Judge Frank L. Arnold this week ordered the boy held at least until a hearing April 1.

The boy in February pleaded no-contest in a deal with Monroe County prosecutors.

Officials have said the student at Jefferson High School near Monroe titled the written plan "Three Days to Kill." Authorities found a Samurai sword and homemade knife in the boy's home.

The Associated Press isn't using his name because of his age.

A girl who was the main target said in a letter read in court Monday that she's been left traumatized.