Syarul was arrested by the Perak police, her lawyer, Zaid Malek, said in a statement.

“The arrest was made under the Sedition Act and Section 233 of the Communication and Multimedia Act 1998,” he said, insisting that there is no criminal offence from what she said in the now-deleted video.

Section 233 of the CMA deals with the improper use of network facilities.

Zaid urged the police and the government to stop this “unnecessary” probe against Syarul.

Last week, police said they were investigating the activist for claiming that pupils at a Chinese school in Perak had sung the national anthem in Chinese.

Three police reports were lodged against her.

Syarul had earlier apologised over her erroneous claim.

Hilir Perak police chief Bakri Zainal Abidin was reported as saying the video was recorded on June 6 last year at a school in Teluk Intan and the pupils were actually singing the Perak state anthem.