Ziad Akir, who heads the Athens Islamic Center at 13 Stewart St., doesn't have "solid evidence" the center is being watched. But no one at the center knows who owns the black SUV that frequently has been seen parked in their lot."(One member) claims that there is strange equipment on the car with flashing indicators. I don't know for sure, but it may be a possibility," said Akir speculating on whether someone may be spying on the center.Some may scoff at Akir's claim as a bout of paranoia during trying times for Arab Americans and those whose faith is Islam....