Grief and anger in India

An Indian man mourns as he holds his dead daughter inside an ambulance in Patna, India, July 17, 2013.

Officials on Wednesday blamed the presence of insecticide in a free lunch after at least 20 children died and many more were sick after eating at a primary school in the eastern Indian state of Bihar.

Read more: India school lunch food poisoning leaves at least 20 children dead, dozens more hospitalized

Indian children who fell sick after eating a free school lunch lie at a hospital in Patna, India, July 17, 2013.

Grief-stricken family members react over the bodies of children who died after consuming a free lunch at a school in Saran District, July 17, 2013.

An Indian family, with their son who fell ill after consuming a free school meal, are transported outside the Patna Medical College Hospital in Patna, July 16, 2013.

An Indian father grieves over the body of his child who died after eating a free lunch in Dharma Sati village, July 17, 2013.

Villagers gather at the funeral of schoolchildren who died after consuming a tainted meal at a school in Saran District, July 17, 2013.

Indian policemen charge a demonstrator following the deaths of 22 schoolchildren who died after eating a tainted lunch in India's Bihar state, July 17, 2013. The tragedy sparked angry street protests.

An Indian father grieves over the body of his child who died after eating a tainted lunch in Dharma Sati village, India, July 17, 2013.

Schoolchildren receive treatment at a hospital after falling ill soon after eating a free meal at a primary school, July 16, 2013.

An Indian policeman beats a youth protesting the deaths of schoolchildren who consumed a tainted lunch, July 17, 2013.

A parent rests with her child at a ward housing Indian schoolchildren who fell ill after eating a free school lunch, at the Patna Medical College and Hospital in Patna, July 17, 2013.

Indian children who fell sick after eating a free school lunch are treated at a hospital in Patna, India, July 17, 2013.

Shoolchildren receive treatment at a hospital after falling ill soon after eating a free meal at a primary school in Chhapra district, July 16, 2013.

Indian schoolchildren who consumed a free mid day meal at a school in the Saran district of Bihar state, receive medical treatment at a hospital in Patna, July 17, 2013.