Mumbai, October 22 : Filmmaker Ram Mukerji, father of actor Rani Mukerji, passed away on Sunday morning. According to sources close to the family, the filmmaker was not keeping well for long and passed away around 4 am. The cause of his death is not yet known. Ram had directed films like ‘Hum Hindustani’ and ‘Leader’ starring Dilip Kumar and Vyjayanthimala. He had also directed and produced Rani’s debut film, ‘Biyer Phool’ in 1996. His cremation will be held around 3 pm on Sunday.