The chairman of a crime-related non-governmental organisation (NGO) who was arrested late last night in Nilai, Negeri Sembilan allegedly received extortion money totaling more than RM300,000 a month since the past few years.

According to sources close to the investigation, the chairman who holds a Datuk title committed extortion against illegal gambling operators nationwide.

"Among those threatened are in Melaka, Negeri Sembilan, Kuala Lumpur, Selangor and Penang.

"The highest amount paid by an operator of illegal gambling centre to the Datuk is up to RM25,000 a month," the source told Astro AWANI.

The source added that, police investigation also found the suspect to be a member of the triad 36 but did not specify the extent of his involvement in the illegal group.

Earlier last night, the NGO chairman who has been vocal in combating gambling activities, vice and secret societies, was arrested purportedly after receiving cash from the operator of an illegal gambling outfit.

The Datuk in his 30s, was arrested by a team from Bukit Aman's Criminal Investigation Department at 10.50pm at the Nilai toll plaza, according to BH Online.

The gambling operator, supposedly fed up over being constantly extorted by the Datuk over his activities, decided to go to the police.

"The gambling operator allegedly possesses audio recordings of the Datuk threatening the former to 'play ball' if he does not want his activities to be exposed to the media or the police," the online news portal reported, while citing Federal CID chief Datuk Mohmad Salleh confirming the arrest.