Police are reportedly investigating activists Ambiga Sreenevasan and Marina Mahathir over their alleged involvement in the "Save Malaysia" protest in Kuala Lumpur yesterday.

The Malay Mail quoted Inspector-General of Police Abdul Hamid Bador confirming that investigations were underway but he did not specify what offences are being investigated.

“We got wind of it (Sunday’s demonstration) and police reports have been lodged. 

"We are investigating,” Abdul Hamid was quoted as saying at a press conference in Bukit Aman today.

Some 100 people had attended the protest yesterday to oppose the instalment of the Perikatan Nasional government through a coup, despite police warning members of the public not to attend.

The peaceful demonstration was organised outside the Sogo shopping complex by a group calling itself the "Save Malaysia Demonstration Committee", which claims to comprise of civil society organisations.

The group had called for the dissolution of Parliament, the continuation of trials against those accused of corruption, and to ban "party hopping".

Police are also investigating activist Fadiah Nadwa Fikri over a separate protest on the same issue that was held at Dataran Merdeka on Saturday night.

She was alleged to have uploaded a post online calling for people to attend the protest to object to the “betrayal” over the current political crises and collapse of the government.

Bukit Aman CID director Huzir Mohamed reportedly said Fadiah Nadwa is being investigated under Section 4(1) of the Sedition Act 1948 and Section 233 of the Communications and Multimedia Act 1998.

In response, the group Lawyers for Liberty has called for investigations that interfere with the freedom of expression to stop, adding that the new government should respect the previous government’s commitment to reform.