Motorists are being urged to check their dashcam footage in the search for a missing 18-year-old.
Joseph Bellamy has been missing from his home in Caldicot, South Wales, for over a week and was last seen near the M48 bridge between England and Wales.
Gwent Police said Mr Bellamy left his home between 12am and 1am on Tuesday 3 December.
CCTV footage showed him riding a red bike on to the bridge, which was later found by police.
In a post on social media, Mr Bellamy’s mother said his family “love [him] dearly” and were “heartbroken”.
“Please come home to us. Everything will be okay, I promise,” she added.
Officers hope dashcam footage in the M48 bridge area will help piece together Mr Bellamy’s movements that morning.
The force has specifically asked for footage from between 12.30am and 2am on the day he was last seen.
Missing posters have been placed in several locations near the bridge.
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The teenager is described as white, 6ft tall and has mousey hair with blue eyes.
He was last seen wearing light jeans and a black Teddy fleece jumper.
Police are urging Mr Bellamy to get in touch with them and for anyone with information regarding his whereabouts to contact them quoting reference 2400400170.
