The police have identified five suspects, namely M Ramdanu alias Danu, Yosep and his wife Mimin, as well as Yosep's two children, Arighi Reksa Pratama and Abi. It is known that these five individuals are still considered close relatives of the victim.

The main perpetrator and mastermind of the murder turned out to be Yosep, the husband and father of the victim. Heartlessly, Yosep Hidayah ended the lives of his wife and own child until their bodies were both placed in the trunk of an Alphard car.

"When providing information to the media, Yosep also conveyed the scenario that had been prepared beforehand. Initially, he had a suspicion about the vehicle that reversed direction in Tuti Suhartini's house parking lot."

Yosep also admitted to finding blood stains on the floor and decided to report the incident to the authorities. Yosep's lie continued when he was surprised to see that the residents found a foot in the car trunk and discovered the bodies of Tuti and Amelia.