Navy and private firm divers search for Bidre's remains in Bhayander Khadi. Pic/Hanif Patel

Day 1 of the search for assistant inspector Ashwini Bidre's mortal remains with the help of the hi-tech magnetometer was unsuccessful. Navy divers with the help of their private counterparts carried out a five-hour long search with the machine, but found only a gunny bag, which, the police said, was filled with sand. The search operation will continue on Wednesday.