Prime Minister Tun Dr Mahathir Mohammad said stern action will be taken against Datuk Seri Najib Razak for breaching the embargo on the Felda White Paper.<br /><br />He added the Pekan MP should know better as he is not a newly-elected member of Parliament.<br /><br />Najib posted a portion of the Felda White Paper on his Facebook page before it was tabled in the lower house on Wednesday.