Rio Olympics gold medalist rhythmic gymnast Margarita Mamun’s father died of cancer at his home in Moscow at 5.30 (Bangladesh local time).Margarita’s uncle Mostak Ahmmed Bulu confirmed the information to Jagonews24.com. The deceased Abdullah Al Mamun would be buried in Russia, he said.Margarita was born in Rajshahi. He went to Russia in 1983. She won gold in rhythmic gymnastics in the 2016 Rio Olympics.Her mother Anna is a former Russian rhythmic gymnast.