"Mayawati is a stone-hearted woman. She has proved it by spending people's money on parks and memorials of stones in the state", Swaraj told an election meeting in Kalpi Assembly constituency in Uttar Pradesh.
Later, however, Swaraj said on Twitter that "I never described Mayawatiji as 'stone-hearted'" and reports quoting her as having said so were "false".
She alleged the BSP supremo had tried to divide the society in the name of caste and creed for political gains.
Swaraj described Manmohan Singh as the "weakest" Prime Minister and said big scams relating to 2G spectrum, Commonwealth Games and Adarsh Housing Society surfaced during his rule.
About Samajwadi Party, she charged that during its rule in UP hooligans had ruled the roost and officers were not able to take action against them.