Police concerned for safety of missing 13-year-old

Tryson Thompson.

Police are concerned for the safety of a 13-year-old boy missing in the Tasman area.

Tryson Thompson was last seen in the Rai Valley area late on Wednesday, July 4.

"It's possible he has tried to hitch-hike to Nelson - we would ask anyone who may have seen him or picked him up, to please get in touch with Police," says police.

"Tryson is of slight build, and has a distinctive birthmark on his right cheek."

It has been very cold in the area, and Police are urgently seeking any information of where Tryson may be - please call 111 if you can help.