FILE - In this Aug. 28, 2009, file photo, Patty and Jerry Wetterling show a photo of their son Jacob Wetterling, who was abducted in October of 1989 in St. Joseph, Minn and is still missing, in Minneapolis. Federal authorities said Thursday, Oct. 29, 2015, Daniel James Heinrich, a Minnesota man charged with child pornography after a search of his home found pictures of naked boys is also a "person of interest" in the disappearance of Jacob Wetterling, whose 1989 abduction led his parents to launch a national center to prevent child exploitation. (AP Photo/Craig Lassig, File)