UPDATE: The Indiana State Police have canceled this Silver Alert.
ZIONSVILLE — A Silver Alert was issued Friday morning for a missing Zionsville boy believed to be in extreme danger.
The 14-year-old was last seen Thursday at 10:30 p.m. wearing a black shirt, dark shorts and flip flop sandals.
The Boone County Sheriff's Office described the 14-year-old as an Asian male, 5-foot 9-inches, 160 pounds with black hair and brown eyes.
If located, he may require medical assistance, according to police.