He is the leader of the deviant "Tuhan Harun" cult.
Harun Mat Sat was arrested at a rented house in Tangkak in the Malaysian state of Johor on Wednesday for the killing of Pahang Islamic Religious Department enforcement chief Ahmad Raffli Abdul Malik in Kuantan, Pahang state, earlier this month.
The New Paper had reported on Nov 12 that Mr Ahmad Raffli was shot dead at his house near Kuantan.
More details have emerged about the suspect who was arrested with two others, believed to be family members, the New Straits Times reported.
One of them has been identified as Harun's third wife, Azida Mohd Zol, 30.
Harun, 47, a music composer and an adviser to several investment companies, allegedly named himself "Tuhan Harun" and had spread deviationist teachings at three premises in Pahang since last February.
He is also facing a charge of cheating a contractor of RM200,000 (S$78,000) five years ago and another five counts of assisting three investment companies to accept deposits without valid licences.
Harun, who claimed that he was "Tuhan 2013" (God of 2013), is believed to have raked in millions by making full use of the "black economy".
He allegedly operated illegal deposit-taking schemes and multi-level marketing, and used his followers to ensure that the money train kept on rolling.
Authorities also believed that he was behind a cooperative that operated in at least five states. The cooperative was set up in 2011.