The Maharashtra Navnirman Sena (MNS) on Tuesday demanded a survey of Bangladeshis who are "living illegally" in Mumbai, on the lines of the National Register of Citizens (NRC) list prepared in Assam.

"It has now been proved that over 40 lakh people (in Assam) are illegal infiltrators. (MNS chief) Raj Thackeray has been talking about this issue for several years," party leader Bala Nandgaonkar said in a statement.