RIYADH: Prime Minister Muhammad Shehbaz Sharif and Saudi Crown Prince Muhammad bin Salman Saturday discussed to further strengthening the bilateral economic, investment and trade ties. During a meeting at the Royal Palace, they also discussed issues of mutual interest and global and regional issues. On the occasion, the prime minister was accompanied by the members of his delegation including federal ministers. Earlier, upon his arrival at the Palace, the prime minister was warmly welcomed by the crown prince. He was given a guard of honour. The prime minister is undertaking his three days official visit to Saudi Arabia on the invitation of the Saudi crown prince.