The offices of The Malaysian Insider portal were raided by police and officials from the Malaysian Communications and Multimedia Commission (MCMC) late on Monday.
Managing editor Lionel Morais, features editor Zulkifli Sulong and Malay news editor Amin Iskandar were taken into custody and several computers and other items were confiscated.
Authorities in socially conservative Malaysia have conducted a series of arrests since last August for sedition, detaining opposition politicians, activists, and academics. Nurul Izzah Anwar, the daughter of jailed opposition leader Anwar Ibrahim, was arrested for sedition this month over a speech made in parliament.
The latest arrests were over an article that said the Confederation of Rulers – Malaysia’s monarchy – had rejected a proposal to amend a federal law that could allow the use of the Islamic punishment, hudud, in Malaysia.
Malaysia’s Islamist opposition party is calling for strict enforcement of sharia, or Islamic law, for Muslims that includes amputations and stonings.