Dhaka, Feb. 9 -- Four people have died and 250 others were injured in widespread violence over the demolition of a madrasa and an adjoining mosque in the Indian state of Uttarakhand.

Authorities have imposed a curfew on Haldwani city, issuing shoot-at-sight orders against rioters and shutting down internet services following Thursday's clashes, Indian broadcaster NDTV reports.

Tensions in the city boiled over into violence when a team of government officials, accompanied by policemen, attempted to raze the 'illegal' structures following a court order.

However, they were met with fierce resistance from residents in the Vanbhulpura area, prompting clashes that led to injuries to over 50 policemen, with several administration officials, m...