Lewis, 31, drives a black 58-plate BMW car and has links to the Brecon Beacons.
He is described as white, bald with a beard, slim and is believed to be wearing a t-shirt with black tracksuit bottoms and black trainers.
Please contact South Wales Police with any information or sightings quoting occurrence 2100229952
Go to: https://bit.ly/SWPProvideInfo
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Via email: SWP101@south-wales.police.uk
Phone: 101
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