Delhi Assembly Speaker Ram Niwas Goel on Thursday sent a defamation notice to Shiromani Akali Dal (SAD) legislator Manjinder Singh Sirsa.
The Akali Dal legislator had retweeted a picture of a white Duster car on July 15 with a sticker "Son of MLA" on it and had claimed that it belonged to the Speaker's son.
Rejecting Manjinder Singh Sirsa's claim, the Speaker has sought a written apology within seven days and has threatened to sue him for defamation if he doesn't.
Mr Sirsa represents the Rajouri Garden Assembly constituency in Delhi.
(With input from ANI and PTI)