KANPUR, May 29 -- Four labourers and two security guards were killed after a section of an under-construction bridge over the Betwa river collapsed during a storm in Hamirpur district early Friday, officials said.

The incident occurred near Morakandar Parsari village under Lalpura police station limits, where a 700.9-metre bridge has been under construction at a cost of Rs.92.52 crore for the past two years. According to officials, a pier, pillar number five, gave way along with its shuttering during strong winds and rain, bringing down nearly 110 metres of slab between pillars four, five and six.

Seven workers were on the bridge carrying out wiring work when the structure collapsed around 3 am. Three survived after taking shelter insid...