A senior Sarawak minister William Mawan Ikom has described ex-premier Dr Mahathir Mohamad’s criticisms of Prime Minister Najib Abdul Razak as the former’s ‘hobby’.

“The former prime minister has been saying a lot of things favourable or not favourable about the way Najib is running the government. Probably that is his hobby,” said William Mawan Ikom, who is state social development minister and president of Parti Tenaga Rakyat Sarawak (Teras).