The fact that the three employees of the company went inside a motel without taking the ornaments with them led to raised suspicion about insiders' role, police said.
The three were being questioned, police said adding they were looking into the angle that one of them could have alerted their accomplices while having food at the motel.
The employees had parked the van in which they were taking gold ornaments worth Rs two crore to different places at the motel to have lunch. When they returned, the van was found missing.
"We are looking into all angles. We are not ruling out anything at this stage," a senior police official said.
