A 20-year-old man from Valletta is in critical condition after receiving an electric shock on Sunday afternoon.
The police said the man was found lying on the ground in his house in St Christopher Street, corner with Old Bakery Street, Valletta.
The man was taken to hospital where he was certified to be in a serious condition and put on the danger list.
Duty Magistrate Silvio Meli appointed various experts to help the inquiry.