Signed “Americans for a Better Way”, it was mailed to Islamic centers in San Jose in Northern California and Long Beach and Pomona in Southern California. Authorities were alerted Thursday night after the center’s imam found it in the mail. “The hate campaign targeting California houses of worship must be investigated as an act of religious intimidation, and our state’s leaders should speak out against the growing anti-Muslim bigotry that leads to such incidents,” Hussam Ayloush, executive director for CAIR’s office in Los Angeles, a civil liberties and advocacy organization for Muslims in the United States, said in a statement. Law enforcement agencies across the country reported 257 anti-Muslim incidents last year, according to the FBI. CAIR considers the actual threat as following from extremists after some hostile to Muslims affirmations made in the Presidential campaign.