Angry protests erupted in one of India's poorest states Tuesday over the deaths of more than 100 children from a mysterious brain fever potentially linked to lychees.

So far this month 103 children, mostly under 10 and malnourished, have died from Acute Encephalitis Syndrome  in the Muzaffarpur area of the eastern state of Bihar.

The toll may rise with dozens more children undergoing treatment in packed hospital wards, where television pictures showed several children to a bed.

On Tuesday, dozens of people gathered outside the main hospital in Muzaffarpur to accuse local authorities of acting too slowly and of not caring.

The state's health minister came in for particular flak after asking reporters about the score in India's cricket match against Pakistan on Sunday during a news conference on the crisis.

"Bihar's Health Minister Mangal Pandey seems more worried about cricket score than the death of children," tweeted Randeep Surjewala of the opposition Congress party.

Rabri Devi, another opposition figure, called the deaths "cold-blooded murder."

"Children are dying because of a lack of medicines and treatment," she tweeted.

Bihar Chief Minister Nitish Kumar was due Tuesday to visit the state-run Sri Krishna Medical College, where most of the children have died.