He was last seen when he left a house with friends on Leidsevaartweg near Heemstede-Aerdenhout station. He left around 00.40 hours by bike to his house in Overveen. He has not arrived there.
His description: he is about 1.70 meters tall, of normal build and blond curly hair with dark brown outgrowths. He wore a black Dickies puffer jacket on Wednesday night, a brown sweater with a white H on it (Harlaut brand), light blue Carhartt jeans and black Nikes. He rides a dark gray Sensa racing bike.
The police ask anyone who knows where Sam is, or has seen him, to contact him via 0900-8844.
