Luke Walmsley died at his school

Luke, 14, died from a single stab wound to the heart after an incident at Birkbeck School in North Somercotes, near Louth on Tuesday.

The boy, who has not been named, appeared before Skegness magistrates.

He had been held at Skegness police station since Tuesday morning and was charged on Wednesday night.

Luke's parents, Jayne and Paul, visited his school on Wednesday afternoon, accompanied by police.

Fellow pupils have left flowers on a grassy area inside the school gates in tribute to their classmate.

On Wednesday morning, more than 50 students and family members attended a service at the Trinity Methodist Church where Luke was remembered.