Anti-corruption activist Anna Hazare today said he was "saddened" by corruption allegations against Delhi Chief Minister Arvind Kejriwal, who was also his former protege. Mr Kejriwal's Aam Aadmi Party, however, said it would prefer to differ. "We respectfully disagree with Anna Hazare," said the party's senior leader Ashish Khetan. The 79-year-old activist, whose months-long agitation for the Jan Lokpal Bill in 2011 had drawn widespread support, said he had been following sacked water minister Kapil Mishra's allegations against Mr Kejriwal on television.