The police, waiting to record the statement of the professor who had last audited the CSMT foot overbridge that collapsed last Thursday, have said they would be forced to conduct raids at his homes, offices if he did not appear by Monday.

A senior officer privy to the investigation told mid-day, "Professor DD Desai, who runs the firm, Associated Engineering Consultants and Analysts, had conducted the audit of Himalaya FOB in 2016. We have written a letter to the person concerned in the BMC to ask him to report to Azad Maidan police station so that his statement can be recorded. But professor Desai has neither reported to the police station nor contacted us over the phone. We are trying to trace him now."