The child rights body has sent a notice to Twitter too and has given Mr Gandhi and the social media giant 10 days to respond to the notice, sent based on a Mumbai resident's complaint.
Ram Kadam, a BJP lawmaker in Mumbai, said he is planning to file a complaint against the Congress president for his tweet.
"The only crime of these Dalit childfen was that there were bathing in an 'upper-caste' well... History will not forgive us if we don't fight the toxic politics of hatred by the RSS/BJP," Rahul Gandhi had tweeted.
Mr Gandhi, who turned 48 yesterday, has not deleted the tweet that has been re-tweeted by over 9,000 users.
Mumbai Congress chief Sanjay Nirupam dismissed the notice. "The notice is nothing but bakwaas (nonsense). The notice should have been sent to the Maharashtra chief minister who has failed to protect the rights and dignity of children. Rahul Gandhi simply highlighted this sorry state of affairs," he said.
(With inputs from PTI)
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