EATON< IN - Authorities are asking for the public’s help as the search continues for a missing Indiana teenager who is “believed to be in extreme danger,” according to a missing person alert.

Scottie Dean Morris, 14, was last seen at 8:30 p.m. Thursday in the small town of Eaton, Indiana.

A Silver Alert issued for Morris reads: “He is believed to be in extreme danger and may require medical assistance.”

Authorities have not disclosed details on the boy’s condition or why he may need medical assistance.

Since his disappearance, crews have searched for Morris on foot and by boat, using infrared drones and helicopters and with bloodhound teams on the ground.

More than 100 volunteers worked with Eaton Police — a small department with only four regular officers — to search for the teenager on Friday.

On Sunday, people were asked to stay away from wooded areas, rivers and tree lines while Indiana State Police helicopters used infrared cameras to search for Morris.

A search party was scheduled to go out again Monday morning to look for the teenager on foot.

Morris is described as having brown hair and blue eyes, and is 5′ 4″ tall, according to police. He was last seen wearing a white shirt and red and black shorts.