The city of Hannover is on high alert as police search for a missing ten-year-old boy, Bernard B.

, who disappeared on Friday evening.

Bernard, who has autism and ADHD, was visiting Hannover with his father when he ran away in the Oststadt area.

Despite extensive search efforts using dogs, drones, and public appeals, Bernard remains missing.

He was last seen wearing blue jeans, a blue shirt with 'Outside' printed on it, and a black-and-white checkered jacket, and is believed to have a light-colored plush toy with him.

Authorities are particularly focused on the main train station, suspecting he might attempt to return to Berlin.

Due to his age and condition, there is concern for his safety, and the public is urged to provide any information that could assist in locating him.