The advancing monsoon and the increasing water level in Ganga in Uttar Pradesh's Prayagraj town have thrown up a challenge for authorities: Dealing with the mass graves in the sandbanks, suspected to be of Covid patients. As the water level rises and the sand banks crumble, the bodies are floating up. Cellphone videos and images shot by local journalists at different ghats in Prayagraj over the last two days showed the authorities fishing out the bodies.