PKR president Datuk Seri Anwar Ibrahim said Prime Minister Tun Dr Mahathir Mohamad will explain the invitation to all Malay-based parties including UMNO to join Parti Pribumi Bersatu Malaysia (Bersatu).<br /><br />Anwar, who is Port Dickson MP, said the meeting will be held at the Pakatan Harapan Presidential Council Meeting on Monday.<br />He said this after the launch of University Malaya Endowment Fund (UMEF) on Saturday night.