Police on Saturday issued a stern warning that individuals or groups would be charged for holding the illegal assembly to overthrow the government at Dataran Merdeka this Tuesday.

Kuala Lumpur deputy police chief Datuk Amar Singh Ishar Singh said police would not hesitate to detain parties attempting to spark unrest under the Penal Code and the Security Offences (Special Measures) Act 2012 (SOSMA).

He said intelligence found several groups and non-governmental organisations (NGO) would be involved in the illegal gathering to show their dissatisfaction against the government and to create chaos.

"Kumpulan Gerakan Turun Kos Sara Hidup (TURUN), Jingga 13, Solidariti Anak Muda Malaysia as well as Solidariti Mahasiswa Malaysia were believed to be involved in the gathering," he told a media conference at Kuala Lumpur police contingent headquarters, here.

He added that the illegal assembly organisers would also be setting up camps around Dataran Merdeka and would be bringing various weapons including grenades and gas masks to stir up a commotion.

In this regard, Amar Singh advised the people not to participate and support the assembly as it is against the law.

He said to date, police have received 588 reports nationwide in protest against the assembly to bring down the government.