▁are ▁a ▁national ▁security ▁risk . ▁There ▁is ▁an ▁organ ised ▁infl ux ▁of ▁nearly ▁ 4 0 , 0 0 0 ▁illegal ▁Bang l ades hi ▁and ▁R oh ing ya ▁mus lim ▁imm igr ants ▁in ▁Del hi ▁who ▁pose ▁a ▁national ▁security ▁risk , ▁threaten ▁the ▁national ▁integration ▁and ▁alter ▁the ▁dem ograph ics . ▁A ▁lawyer ▁Ash w ini ▁Up ad hy ay ▁file d ▁a ▁Public ▁interest ▁lit ig ation ▁( PI L ) ▁in ▁" S up reme ▁Court ▁of ▁India " ▁( SC ) ▁to ▁identify ▁and ▁deport ▁these . ▁Res pond ing ▁to ▁this ▁P IL , ▁Del hi ▁Police ▁told ▁the ▁SC ▁in ▁July ▁ 2 0 1 9 ▁that ▁nearly ▁ 5 0 0 ▁illegal ▁Bang l ades hi ▁imm igr ants ▁have ▁been ▁deport ed ▁in ▁the ▁preceding ▁ 2 8 ▁months . ▁There ▁are ▁estimated ▁ 6 0 0 , 0 0 0 ▁to ▁ 7 0 0 , 0 0 0 ▁illegal ▁Bang l ades hi ▁and ▁R oh ing ya ▁imm igr ants ▁in ▁National ▁Capital ▁Region ▁( N CR ) ▁region ▁spe cially ▁in ▁the ▁districts ▁of ▁G uru gram , ▁Far id abad , ▁and ▁Nu h ▁( M ew at ▁region ), ▁as ▁well ▁as ▁interior ▁villages ▁of ▁B hi w ani ▁and ▁His ar . ▁Most ▁of ▁them ▁are ▁Muslim s ▁who ▁have ▁acquired ▁fake ▁H indu ▁identity ▁and ▁under ▁question ing ▁they ▁pret end ▁to ▁be ▁from ▁West ▁Beng al . ▁In ▁September ▁