Two men are behind bars after attempting to make off with over $4,000 worth of construction materials from a site in unincorporated Lawrenceville. According to a Gwinnett County Police Department release, Elvin Palma Cruz, 27, and Luis Palma Reyes, 31, were nabbed Thursday night when a sharp-eyed security company, monitoring the site remotely, spotted a shady truck and trailer on the scene.