New Delhi, Feb 01 (ANI): Former BJP president Nitin Gadkari served a legal notice to Aam Aadmi Party convener and Delhi Chief Minister Arvind Kejriwal for calling him corrupt. Gadkari has asked Kejriwal to apologize for his remark within three days. He has also threatened to sue the AAP chief if there is no apology from him within three days. Reacting over this AAP spokesperson Ashutosh said that there is no question of apologizing to Nitin Gadkari.