Ludhiana, Sept. 17 -- More than a month after a major road cave-in in Kitchlu Nagar, the municipal corporation is yet to identify the optical-fibre company that damaged the dart sewer beneath the road, despite earlier assurances that the agency responsible would be traced and the repair costs recovered.

The cave-in on August 6 created a crater nearly 20 feet deep and wide. Civic body officials had then said their assessment suggested that the dart sewer was punctured during the laying of optical-fibre cables, triggering gradual soil erosion beneath the road, hollowing it out and eventually causing the collapse.

The civic body had also said it would identify the company responsible for damaging the sewer and initiate legal action against...