The Mumbai police have initiated a high-level enquiry into the collapse of the CSMT FOB on Thursday evening that killed six and left nearly three dozen commuters injured.

The complainant, Sanjay Mohan Kamble, senior inspector of MRA Marg police station, registered a complaint against the Railways and civic officials under various sections of IPC at Azad Maidan police station late Thursday night. Sources told mid-day that Zonal DCP Abhishek Trimukhe has been asked to conduct a thorough probe into the matter.