New Delhi, June 9 -- In the wake of a tragic accident that claimed four lives and left nine injured after they fell off two moving and overcrowded local trains in Thane district on Monday morning, Maharashtra Navnirman Sena (MNS) president Raj Thackeray has triggered a controversy by blaming the influx of migrants from other states to Mumbai for the "collapse" of the railway system.

"A flood of people coming to (Mumbai) from outside led to the collapse of the railway system. But everyone is busy campaigning for elections," he told reporters in Pune.

"Accidents involving local trains happen every day. It's not only about the railway system. All our cities are in a mess. There are no proper roads, and traffic snarls are a regular feature ...