Subscribe Now! Get features like

Exclusive: Cops flagged Chawri Bazar building's illegal construction in June, say officials
2 dead in Old Delhi building collapse; CM orders FIR against contractor
‘Loud crashing sound, lintels collapsed at once’: Eyewitnesses on Chawri Bazar building collapse
Chawri Bazar building collapse: Similar incidents that have rocked Delhi

Twenty rebel TMC MPs have claimed a merger with a little-known party, triggering a fresh legal battle over the anti-defection law's merger exception.