Ludhiana, Nov. 27 -- A migrant labourer died and four others were injured after the roof slab of an under-construction factory collapsed in Bhagat Singh Nagar on Tuesday evening. The accident occurred moments after the third-floor slab was cast, leaving workers trapped under a tangle of iron framework and concrete debris.

The deceased was identified as Ram Ishwar Rai, 40, a migrant from Bihar, who lived in Guru Nagar Colony in the city.

The collapse occurred around 5.30 pm when workers had just finished casting the roof slab.

According to eyewitness Dharminder Kumar, a fellow labourer present at the site, the team had started removing the shuttering of the freshly cast slab when a sharp cracking sound echoed.

"Before anyone could unde...