Two teenagers — a 19-year-old Georgia Southern University student and a 16-year-old girl — have been reported missing by area law enforcement agencies.The cases are separate and unrelated.University Police continue to investigate the case of John David Keeton, a Georgia Southern student who has been missing since March 28.University Police Chief Michael Russell released a flier Tuesday morning that has been distributed around campus.Keeton is believed to have traveled to the San Francisco area, according to the flier, and has expressed suicidal tendencies.The flier, which includes his photograph, describes Keeton as a white male, 6 feet 1 inch, 165 pounds, with brown hair and brown eyes.An Eagle Gram sent through university email on April 2 indicated that Keeton lives at Centennial Place.Anyone who has information on Keeton’s whereabouts is asked to contact Georgia Southern University Police Investigator Chris McBride at (912) 478-3024 or (912) 478-5234.In a separate development, the Statesboro Police Department issued a Nixle alert Tuesday afternoon saying that a 16-year-old girl has been reported missing.Kristeena Bosarge was last seen Sunday in the area of Foxlake Drive, police said.Bosarge is described as a white female, 5 feet 3 inches, 170 pounds, with blue eyes and blonde hair. Anyone who comes in contact with Bosarge or has information on her whereabouts is asked to call the Statesboro Police Department at (912) 764-9911.