A 16-year-old boy who lives in Fgura was grievously injured after falling into a shaft of an abandoned residence in Triq il-Kampanella.
He fell at around 9.30pm when he allegedly went up on the roof and tried to jump from one roof to another. He fell down a height of around two storeys.
He was taken to Mater Dei by ambulance and was later certified to have sustained grievous injuries.
A crew from the Civil Protection Department was called to the scene to pull the boy out of the shaft.
The Police investigations continue.