20/04/2015 14:34 BST | Updated 20/06/2015 10:12 BST

Crossbow Teenager Stabs Teacher To Death

Undertakers remove the body of a teacher who resulted dead at the Joan Fuster Institue in Barcelona on April 20, 2015 after a student allegedley broke into the school armed with a crossbow killing him and wounding four others. A student under 14 years was arrested today by police on suspicion of having killed a teacher from the school in northeastern Spain in Barcelona and wounding four people, a police spokesman. AFP PHOTO (Photo credit should read -/AFP/Getty Images)

A schoolboy has killed a teacher after shooting a crossbow made from ballpoint pens, according to reports from Spain.

The 13-year-old was arrested on suspicion of murder after the teacher's death in Barcelona. At least three others were injured at the high school, possibly with a knife.

Local media reported that the teenage boy had arrived in class at Joan Foster Institute in La Sagrera an hour after lessons began this morning (Mon). He had concealed the weapons in his backpack.

He is suspected of targeting a female teacher and her daughter first.

Both are believed to have suffered non-serious wounds, although the woman reportedly sustained injuries near her eyes.

A male substitute teacher who then entered the classroom to stop the attack is believed to have been fatally stabbed in the chest with 'a bladed weapon'. He had only been working at the school for a few weeks, El Diario reported.

The third person to be injured was another pupil, who was stabbed with the knife. He has been taken to Sant Pau hospital with a chest wound.

Classmates claimed the boy had repeatedly said last week he would kill all the teachers and then himself.

He allegedly told pupils he had 25 teachers on a blacklist, but they thought it was a joke.

Xavier Trias, the mayor of Barcelona, has said he was 'appalled' by the 'tragic attack'.

13 Year-Old Kills Teacher with Crossbow in Barcelona