Tehran: Iran's Supreme Leader Ayatollah Ali Khamenei on Wednesday lashed out at some Western countries for "raising" terrorism in the Muslim world. "Unfortunately, the Eid ul-Fitr in some of the Muslim countries this year was turned into mourning ceremonies by the terrorists who want to introduce fake Islam as the real Islam," Khamenei said while leading morning prayers in Tehran. "Such crimes are the results of raising terrorism by the intelligence services of the US, Israel and Britain," Xinhua news agency quoted Khamenei as saying. However, the creators of terrorism will not remain secure from the repercussions of terrorist acts either, he warned. In the early hours of Wednesday, the Iranians attended the mosques and holy shrines across the country to celebrate Eid ul-Fitr which marks the end of the holy month of Ramadan.