An Italian prisoner has shot at fellow inmates through the bars of their cell with a weapon believed to have been smuggled in by drone.

The 28-year-old man, who has links to the Neapolitan mafia, fired three shots on Sunday at prisoners he had argued with, but without injuring them, said Donato Capece, the head of the Sappe prison union.

The man had got permission to leave his cell to have a shower, and once the door was open he pulled out the gun and pointed it at a guard, forcing him to hand over his keys to the other cells, Capece said.

Unable to open the cells of his enemies, the inmate shot through the bars instead.

The man then used an illegal mobile phone to call his lawyer, who advised him to turn his weapon over to the authorities in the high-security prison, about 60 miles (100km) south-east of the capital, Rome.

“We assume that the weapon arrived by drone,” Capece said.

The incident was the latest in a series that have raised concerns over the poor management of Italy’s…