Iranian Foreign Ministry Spokesman Ramin Mehman-Parast deplored the terrorist attack on a bus carrying passengers in Pakistan which killed 18 people. At least 18 Shite Muslims were killed on Tuesday when a bus carrying passengers from Rawalpindi to the northern town of Gilgit came under attack in the mountainous region of Kohistan. Several others were also injured in the attack. The bus was carrying 39 people, mostly Shiite pilgrims, returning to their homes after visiting holy shrines in Iran. Mehman-Parast pointed to the necessity of a collective fight against extremism and terrorism, and warned Pakistani Muslims, Sunnis and Shiites, to remain vigilant in the face of enemies\' schemes aimed at creating division among Muslims. He also extended his sympathy to the families of the victims. Jundallah terrorist group has claimed responsibility for Tuesday\'s attack. Pakistani Interior Minister Rehman Malik announced the formation of a joined team of inquiry comprised of high-ranking police and intelligence officials.