Missing college student Martin Roberts below disappeared from North Carolina on April 21, 2016.
According to his fraternity roommates, wherever Roberts was headed that Thursday afternoon he did not take his cell phone with him.
Police this week said they will be extending their search for James Martin Roberts "across the state" but added that the 19-year-old doesn't drive or own a vehicle.
A report that he was seen over the weekend "in the Trout Lake region of Blue Ridge Parkway" was fully investigated -- on land and by air -- but turned out to be erroneous.
However, the Boone Police Department is "continuing to develop leads" and "diligently" tracking the young man's whereabouts.
Martin Roberts is a slender blond-haired Caucasian male standing about 5-foot-10 and weighing around 150 pounds.
He attends Caldwell Community College & Technical Institute, but allegedly was last sighted around noontime on the Appalachian State University campus near ASU's Convocation Center.
That day Roberts is said to have been wearing an Appalachian State windbreaker, khaki shorts, gray New Balance sneakers, a black shirt and a white golf hat.
A $1000 reward is now being offered by High County Crime Stoppers to help solve his missing persons case. Anyone with information about it is asked to call (828) 268-6959 or (828) 737-0125.
Tips can also be emailed to www[dot]tipsubmit[dot]com/webtips.aspx?AgencyID=1251 or by sending a text to 274637 (CRIMES) and adding 'NCTIP' within the message.
Detectives at the Boone Police Department can be reached anytime at (828) 268-6900.