In a strongly worded letter to Kejriwal, Pawan Khera asked him not to use language "unbecoming of an educated man" while stating that the AAP leader was free to take a political stand against individuals and policies.
Kejriwal has already announced that he will contest against Dikshit in her New Delhi constituency in the Assembly polls slated for November this year. The AAP leader had also said that if she decides to contest from another seat, then he will also contest from there.
"In the past too you have used language unbecoming of an educated man against your political rivals. Here we are talking of a lady who has neither responded to your abusive campaign nor has herself indulged in any such malicious campaign.
"While you are free to take a political stand against individuals and policies, kindly refrain from such personal attacks which reduce politics to a cheap gimmick," the letter said.