Four Sikh men from Punjab have drowned in a cow dung tank on a dairy farm near Pavia in northern Italy.
Investigators suspect that the four were overcome by carbon dioxide fumes from the cow manure. They believe that three died after jumping in to rescue a worker who had been emptying the tank.
Two owned the farm and two were employees. All were Indian citizens. The two brothers Prem and Tarsem Singh registered their farm in 2017.
It is about 45km (28 miles) from Milan.
Italian media report that the Singhs’ farm at Arena Po, producing milk and veal cattle, is one of the biggest in the Pavia region.
The victims were named as: Prem and Tarsem Singh, aged 48 and 45 respectively, Arminder Singh (29) and Majinder Singh (28). The manure was being collected for use as fertiliser on the farm’s fields.