A bridge collapse in Kolkata, India, has killed at least 14 people and injured dozens more, according to officials.
The overpass reportedly fell in a densely populated residential neighborhood. Officials say at least 100 people may be trapped under the debris.
The steel and concrete bridge was under construction, but local reports say its completion had been postponed multiple times.
It's unclear why the overpass's construction had been delayed so many times or what caused the collapse, but witnesses told local media they heard an explosion.
Bridge collapses aren't uncommon in India, and experts say a lack of safety enforcement, like building codes and material quality, are to blame.
India's prime minister responded to Thursday's bridge collapse, tweeting, "Shocked & saddened by collapse of under construction flyover in Kolkata. Took stock of the situation & rescue operations."
Members of the army were deployed to help medics and officials on scene with rescue efforts, and local media report cranes are working to lift debris.