Graffiti 'threatening' Kejriwal appear inside metro trains, AAP says BJP behind it

Aam Aadmi Party alleges graffiti threatening CM Arvind Kejriwal in Delhi metro, accuses BJP. Atishi claims BJP targeting Kejriwal with conspiracies fearing Delhi seat loss. Police probing graffiti; Kejriwal arrested, insulin stopped in Tihar jail, Swati Maliwal used in failed conspiracy. Graffiti found at Rajiv Chowk, Patel Chowk, Patel Nagar metro stations; questions raised on CCTV surveillance, Cyber Cell's inaction.