The accused allegedly had abducted Shan Babu in the night and after murdering him, he carried the body to the police station on his shoulders.
Saji, who was an accused in several criminal cases, including those related to attempt-to-murder, had a dispute with his neighbour Baby’s family.
The deceased has been identified as Shaji, a hotel worker.
All the three members of the family were found dead at their house on Sunday. The dead are: Soni Zachariah, 52, his wife Reena, 45, and their seven-year-old adopted son Rayan.
The High Court had earlier given anticipatory bail to Santhamma and asked her to surrender before the DySP of Nedumangad.
Gopi Vijayan, 19, was found hanging at the spot. He hailed from Vechoor village and was the son of Girish of Hemalayam.
The sexual assault case dates back to 2017, in which actor Dileep is accused of conspiracy.
The incident occurred at noon on New Year's Day after Lijin's wife reportedly threw the cake at him.
The investigators have decided to examine all angles though Anish's family members claimed that it was a premeditated murder.
The police confirmed that Vismaya was murdered.