The Malaysian Communications and Multimedia Commission (MCMC) has failed in its attempt to get Twitter to take down several tweets by a vocal government critic, the latest in a series of actions to shut down views not favourable to Putrajaya, MalaysiaNow has learnt.

The US-based social networking service refused MCMC's request to take down four tweets by Salim Iskandar, who frequently posts tweets mocking Prime Minister Anwar Ibrahim's coalition government.