The 14-year-old German boy who fell from the top floor of a Paceville hotel on Tuesday night died of “multiple injuries due to an accidental fall”, the autopsy has concluded.

Johannes Werner Sterzel plunged about eight storeys in what investigators believe was an incident related to sleepwalking.

However, police sources said blood samples have been sent abroad for toxicological tests which would establish whether there was alcohol in the boy’s blood.

Meanwhile, the police yesterday continued to interview members of the group he was with, especially those who were sharing a room with him, in an attempt to establish exactly what happened.

The boys in the room at La Vallette Resort were all asleep when the incident occurred at about 4.40 a.m. The police are not excluding the possibility that Mr Stenzel could have sleepwalked over the balcony.

The boy, who has been attending English language courses in Malta for the past two weeks, shared a room on the top floor of the Paceville three-star hotel.

Sources close to the investigation said witnesses heard the boy scream in the balcony before he plummeted to the ground. A team of paramedics who were called to the scene certified him dead.

Fellow students, especially those who shared his room, have been attending sessions with a psychologist because of the effect the incident has had on them, sources said.

Mr Stenzel’s relatives arrived in Malta yesterday from the small village of Langenhennersdorf, close to Dresden, and are closely following the police investigation.