MUMBAI: A detailed inquiry report by the civic body into the collapse of the Himalaya foot over-bridge ( FOB ) is unlikely to indict any more officers. The report was initially expected to be out in a month after the bridge collapsed on March 14 this year.The preliminary investigation report into the Himalaya Bridge crash indicted four officers—two who are in service and two who have retired. Of these four, three officers have been arrested.Sources said that the administration now seems to be treading cautiously as indicting more civic officials could upset the engineer cadre even more.Already, engineers from the BMC ’s bridges department have gone on mass leave following the arrest of the civic officials in the FOB crash case. Due to this, several ongoing works have been hit. In the coming week, engineers from other departments are also expected to join their counterparts from the bridges department in their protest.A senior official from the BMC said, “We understand that the morale of the cadre has taken a hit with the recent happenings. The detailed inquiry report should be out in the next few days and will focus more on the cause of the sudden failure of the bridge and also how such incidents can be avoided in future.”Senior civic officials, who are privy to the inquiry, said that the detailed report will instead only spell out the cause of the crash following the forensic testing which was done and also spell out remedial measures to avoid such incidents in future.The inquiry, said the sources, dwells upon the history of the bridge and factors like how it had been built, the number of times that the bridge had been repaired and the increase in load on the bridge over the years.A civic engineer from the bridges department told TOI that it is unfair to arrest engineers for the crash. “The bridge gave no signs before it crashed. Besides, the auditor had certified that the bridge was in good condition. In such a situation, should we have concentrated on the bridge which was said to be in a good condition...?“ said the engineer.