Kenny DeLand Jr., the American student who was reported missing more than two weeks ago in Grenoble, France, is alive, his father Ken DeLand Sr. told CNN on Friday.A senior at St. John Fisher University in Rochester, New York, DeLand Jr. had been studying at the University of Grenoble Alpes, according to his family.The woman who had hosted DeLand in France thought he may have left voluntarily, she told CNN before he was found – echoing a theory Vaillant put forward this week.“This is what creates all the worry that any parent could ever feel.”“As time goes by, it makes you worry even more.”He was seen at a store on December 3, a prosecutor saidWhen Vaillant announced Monday he was investigating DeLand Jr.’s disappearance, he said the student seemed “to have left Grenoble voluntarily.”“The young man reportedly told several people that he had arrived in France underprepared and was having difficulty making friends,” Vaillant said Monday.Of all the students DeLand’s host mother had welcomed, he seemed to have the most trouble fitting in, the woman told CNN this week on the condition of anonymity out of concern for her privacy."