In Arizona, a Flagstaff man was arrested for threatening to violently disrupt a Cinco de Mayo festival. The man, James Wesley Cheek, attempted to post an Internet message saying that the Virginia Tech killings would pale in comparison to his plans to disrupt the festivities. Federal authorities said Cheek had helped distribute fliers for the Ku Klux Klan, had a dislike for Mexicans and owned about a half dozen guns. Meanwhile, in Gaithersburg, Maryland, a center for day laborers was set on fire on Friday less than a month after it opened. Investigators said the fire was deliberately set.