A man and his son today drowned in river Libri, a tributary of river Kosi, while bathing on the occasion of Chhath puja at Rangpura village in Bihar's Purnia district.
 
Deputy superintendent of police (Town) SS Thakur said Sone Lal Swarnkar (40) and his son Ajit (13) drowned during Chhath puja.
 
The bodies were fished out of the river.