WASHINGTON - A Muslim civil rights and advocacy organisation has expressed concern about a spike in reports of anti-Muslim incidents including alleged hate crimes in North Carolina, California and New York apparently tied to the 10th anniversary of the 9/11 terror attacks. The Washington-based Council on American-Islamic Relations (CAIR) cited incidents such as a burned Quran being delivered to a Bronx mosque, a New York mosque sign being smashed by a speeding driver and an alleged bias-motivated arson attack on an Arab-owned business in California, a CAIR news release said. CAIR urged state and national leaders to challenge rising Islamophobia. CAIR also called on the FBI to investigate an arson fire at a Sikh-owned store in North Carolina as a possible hate crime Sikhs are often mistaken for Muslims. The alleged perpetrators reportedly spray-painted 911 Go Home on the outside of the burned store. Officials say an accelerant was used to start the fire. Our nations political and religious leaders must step up efforts to address the rising level of anti-Muslim sentiment in our society and speak out forcefully against those who promote or exploit Islamophobia, said CAIR National Communications Director Ibrahim Hooper. He cited other apparently bias-motivated incidents, including threats targeting a Muslim family at a 9/11 air show in California, a package containing hate materials left at a Washington state mosque, the alleged profiling of an Arab-American airline passenger, the targeting of a Texas Muslim restaurant customer with hate graffiti, hate rhetoric used at a rally in Michigan, and anti-Muslim views expressed at a meeting of a Washington state hate group. Hooper noted that a Muslim community in Tennessee seeking to build a new mosque is having a hard time finding contractors, despite the nations struggling economy.