Mumbai: Police have tightened security outside Bollywood actor Salman Khan's residence in the Bandra area of Mumbai following protests demanding a ban on "Bigg Boss Season 13" to include a new concept that they say is "against Indian culture and encouraging vulgarity." On Friday, outside Salman Khan's Bandra bandstand residence in Mumbai, a protester group, including leaders of Karni Sena, held protests, an official said on Saturday. "Police detained protesters from the spot and increased security outside the house," police official said.