He travels with a dark blue Mazda CX-5, built in 2023 and with the license plate 1-GQI-419.
Martijn is 1m78 tall and has a slim build. He has light brown eyes and short, gray hair.
At the time of his disappearance, he was wearing dark blue cargo pants, a green sweater and white and orange sneakers from the “Reebok” brand.
Martijn is asked to contact his family to reassure them.