Fredy Pacini (in picture) fired several times at the victim (Image credit: facebook/fredy.pacini1)

Italian police launched an investigation Wednesday into the death of an intruder who was shot after breaking into the premises of a man who had reportedly been robbed 38 times.

Fredy Pacini, who owns a tyre shop in Monte San Savino in Tuscany, was accused of excessive use of force in self-defence after gunning down a 29-year old Moldovan.

Pacini had taken to sleeping in his shop after a series of thefts, and was woken by noise in the early hours of Wednesday.

He fired several times at the victim, who was with a second man who managed to escape, police said.

"Being a robber is a dangerous job. Am I wrong??? Self-defence is always legitimate!" Interior Minister Matteo Salvini, head of the far-right League, said on Facebook.

"My solidarity lies with the Tuscan shopkeeper who was robbed 38 times," he said.

His comment sparked a political backlash in Italy, with opponents on the left accusing him of inciting violence. But a hashtag supporting the businessman, #iostoconFredy (#I'mwithFredy), went viral on social networking sites.