The Umno grassroots movement has given Dr Mahathir Mohamad a week to apologise for his remarks concerning Prime Minister Najib Abdul Razak and his late father Abdul Razak Hussein during a speech in Sarawak over the weekend.

Failing which, the movement's chairperson Zulkarnain Mahdar said, a police report would be lodged against the former prime minister on grounds of slander and incitement.

The movement was responding to Mahathir blaming Najib and his father, who was the second prime minister, for the erosion of rights in Sarawak...