An 18-year-old Dalton Malmstrom vanished on May 9 after leaving his home in Nichols, Tioga County, New York. Last seen near the Susquehanna River, he is described as 5'10" with dark hair, last wearing a dark shirt. Authorities and volunteers from New York and Pennsylvania continue a three-day search involving K9 units and drones. Malmstrom, a 2025 graduate of Owego Free Academy, left home after an argument with family. The Owego Apalachin Central School District has activated crisis support for students and families. Public tips are requested via New York State Police at (607) 561-7400. The investigation remains active with no arrests or captures reported.