Italian Carabinieri paramilitary police launched an investigation (Image: DAPRESS /

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Two German tourists are being investigated for manslaughter following a fatal boat crash on Italy's Lake Garda in which a man and a woman were killed.

Umberto Garzarella, 37, and Greta Nedrotti, 25, died in the collision in the night between Saturday and Sunday.

The man's body was found on a small boat in the early hours of Sunday morning, while the woman's body was recovered from the water of the popular lake, Italian media reports.

A search for Greta was reportedly launched after women's clothing was found on the boat near the man's body.

Witnesses said one of the woman's legs was partially torn off and the man had suffered a grave abdominal wound.

Umberto Garzarella was found dead on a small boat
(Image: DAPRESS /

The Brescia prosecutor has ordered an autopsy on the bodies of the victims.

Two German men, aged 52, are under investigation for double manslaughter and failure to provide assistance, Italian news agency Ansa reports.

Italian newspaper Corriere della Sera reports that the men were located after other tourists noticed their docked motorboat was damaged.

Greta Nedrotti's body was rescued from the water
(Image: Facebook)

Some locals also told the newspaper that the men were seen eating and drinking at a restaurant in Salò, the largest city on the west shore of Lake Garda.

According to Today, the tourists from Munich told investigators they did not notice anything because it was dark.

One of the two men was also injured in the crash, Brescia Today reports.

Lake Garda is a popular tourist attraction in northern Italy
(Image: DAPRESS /

The tourists underwent blood tests to establish whether they had been drinking before the incident.

They are not in custody, but while the inquiry is ongoing, they are not allowed to leave Italy and return to Germany.

Umberto, who was the owner of a boiler maintenance company, had a passion for boating and owned the small vessel that was involved in the collision.

A friend paid tribute to him, writing on Facebook : "One of the most beautiful smiles in Saló … and one of the most sincere! Bye Umbi … I can't believe it."

Umberto was in a relationship with Greta, who studied Economics at university but was recently working as a hairdresser, Italian newspaper

Italian Carabinieri paramilitary police are conducting the investigation but did not reveal further details.