KUALA LUMPUR (Reuters, The Star/Asia News Network) - Malaysian Prime Minister Najib Razak is expected to announce a new Cabinet on Monday in a reshuffle to fill vacant positions, sources told The Star.

The reshuffle might involve up to four ministers and three deputy ministers, it cited a Putrajaya source as saying.

Those affected by the reshuffle have been notified to get ready to be sworn in before the Yang di-Pertuan Agong or King following the announcement by the Prime Minister.

Najib had announced his plan to rejig the lineup after the ruling coalition won the Sarawak state elections by an increased majority last month.

However, he told reporters on Friday that he needed more time to think about a cabinet reshuffle.

The Prime Minister's office was not immediately available for a comment.

The last Cabinet reshuffle in August last year saw then-Deputy Prime Minister Muhyiddin Yassin and Rural and Regional Development minister Shafie Apdal, both Najib critics, being axed.