Police say new CCTV footage shows missing Haverfordwest man Ben Thompson in the Leckwith area of Cardiff on Saturday night, shortly after he was last seen by a colleague in the city centre.
The footage is from 7.17pm, the latest he has been pictured.
He appears to have come from the direction of the Jubilee Recreation Ground.
Officers say they are "now particularly keen to hear from anyone who has seen Ben since 7.17pm on Saturday."
Anyone with information is asked to call Cardiff Bay Police Station on 02920 338 465.
More top news
A cloudy night with some patchy rain possible in places, clearer spells possible in the northeast. Milder than of late.
You've been sending us pictures of your children dressed up for World Book Day.
A brother is facing jail for killing his step-sister when she fell off a motorbike he was 'racing' in his car in December 2013.