Police searching for missing man Michael O'Leary are trying to trace a cyclist spotted on the evening of his disappearance.
Mr O'Leary, 55, remains missing after failing to return home to the village of Nantgaredig in Carmarthenshire after work on Monday, January 27.
His truck was later found in the Capel Dewi area between his home and Carmarthen.
Andrew Jones, 52, of Bronwydd Road in Carmarthen, appeared at Llanelli Magistrates’ Court on Tuesday, charged with Mr O'Leary's murder.
Now Dyfed-Powys Police are appealing for information to help trace a a person cycling in the area between Capel Dewi and Cwmffrwd on January 27.
CCTV released appears to show the cyclist wearing a high-visibility jacket.
DCI Paul Jones said: "Our priority now is to find Mr O’Leary and we are carrying out all possible inquiries in a bid to get answers for his family.
"This includes knowing more about the person pictured and any sightings of them. The person seems to be wearing a high-visibility jacket. Although the image is not clear I’m hoping someone will have seen them.
"If anyone knows who the cyclist is, or saw the cyclist in the area, please contact police."
On Monday officers carried out anniversary checks with drivers in the Cwmffrwd area to trace anyone who was in the area on the night of Mr O'Leary's disappearance.
DCI Jones added: "During the checks police spoke to drivers and gleaned positive information in connection with the investigation. I would like to thank everyone for their patience as they waited to speak to officers.
"We ask anyone who was in the area at the time, who hasn’t already spoken to us, to come forward. They may unwittingly have information that could help the investigation.”
"This clearly remains a very distressing time for his family and we continue to keep them updated."