An FIR has been registered in Mumbai against 'Taarak Mehta Ka Ooltah Chashmah' actress Munmun Dutta for using a casteist slur in a video. She has been booked under the Scheduled Caste and Scheduled Tribe (Prevention of Atrocities) Act, 1989. Similar FIRs have also been lodged in Haryana and Madhya Pradesh. Earlier, Munmun had apologised for her controversial remark.