Overview
- The February 14 Metro Line 4 parapet collapse in Mulund crushed an autorickshaw and a car, killed one person, injured three, and a month later two remain hospitalised with one in intensive care.
- The MMRDA probe says a welder cut temporary supports before stitch concreting could bind the precast segment to the slab, and it found no defect in design, material, or workmanship.
- Records and an interim consultant report show the Reliance–Astaldi joint venture received three safety warnings in 2025 and has yet to file its incident report after the collapse.
- MMRDA fined the contractor Rs 5 crore, fined the general consultant Rs 1 crore and terminated its services, and ordered the contractor to replace the full team on the Gandhi Nagar–Sonapur package.
- Construction on Line 4 is now limited to safety work under new controls that require permits to remove supports, joint checks by site, QA/QC and safety staff, tagging of finished segments, mandatory toolbox talks, and dedicated supervisors.