India, March 2 -- A public interest litigation (PIL) has been filed in the Bombay High Court seeking a third-party safety audit of all Metro lines after a slab from the under-construction Metro-4 corridor collapsed in Mulund on February 14, killing one person and injuring three others.

The concrete slab fell onto a moving autorickshaw and a car on LBS Marg near Johnson & Johnson and the Mulund fire station.

Ramdhan Yadav, who was travelling in the auto with two relatives, died in the incident. The driver of a Skoda Kushaq was also injured.

The slab, measuring around 6 feet by 4 feet and weighing a few hundred kilograms, fell from pier P-196 in the mid-section of the elevated Metro-4 corridor, which runs from Wadala to Kasarvadavali in ...