A 20-year-old man who lives in Żabbar was grievously injured on Friday when he fell into a shaft after being hit by a falling boulder at a construction site.
The police said the accident happened in Triq Danny Cremona, Ħamrun, at 10.20 am.
The victim was given first aid by a medical team on-site and then taken to Mater Dei Hospital by ambulance.
The police are investigating.