On behalf of Crown Prince Naif bin Abdulaziz Al Saud, Deputy Premier and Minister of Interior, Prince Ahmad bin Abdulaziz, Deputy Minister of Interior patronized here on Tuesday evening a graduation ceremony of a new batch of qualifying courses comprising of 4,107 trainees from Public Security Training City in Riyadh. Upon arrival at the venue, Prince Ahmad was received by Prince Mohammed bin Naif bin Abdulaziz, Assistant Minister of Interior for Security Affairs, and General Saeed bin Abdullah Al-Qahtani, Director of Public Security. Addressing the ceremony, General Al-Qahtani expressed his appreciation of the Crown Prince, Prince Ahmad bin Abdulaziz, Prince Mohammed bin Naif bin Abdulaziz, for their great attention and support for all sectors of the Ministry of Interior and for upgrading their training skills to the highest advanced levels, noting that training cities in the Kingdom of Saudi Arabia now celebrate the graduation of more than 10,800 trainees including the new batch in Riyadh. The ceremony was attended by a number of officials.