Johor police chief Comm Kamarul Zaman Mamat said the suspects, aged between 20 and 60, were detained in seven premises statewide during an operation, codenamed Ops Dadu Khas, launched to eliminate illegal online and four-digit gambling activities on Monday (Sept 25).
The premises are believed to have been turned into gambling joints, he added.
"(Of those detained) Seven are local men, two foreign men and three foreign women," he said in a statement.
He said police also seized 13 mobile phones, two units of printers and RM994 cash.
Comm Kamarul Zaman said since the launch of Ops Dadu Khason Sept 22, a total of 66 people had been arrested in connection to the illegal activity.
Of them, 55 are men and 11 women.
"Eight of them are foreigners.
"All together we seized 67 mobile phones, 23 printers and RM9,641 cash," he added.
Comm Kamarul Zaman said Tenaga Nasional would disconnect power supplies to premises allegedly used as gambling outlets and their business licenses would also be revoked by the local authorities.
He said the case is being investigated under Section 4(A)(a) and 4(B)(a) of the Common Gaming Houses Act 1953.
He urged those with information of illegal activities to contact the Johor Police operation centre at 07-221 2999 or 07-225 4677 or any police stations.