£14,000 worth of metal has been stolen from the railway in the New Tredegar area .
The British Transport Police is asking anyone who may have seen anything suspicious between the 2nd and 8th of January, when the thefts occurred, to contact them on 0800 405040.
Officers are investigating four separate incidents in and around the Brithdir area.
We will be carrying out directed patrols along the Rhymney Valley line, including officers patrolling on foot, in vehicles and with police dogs, to catch and deter criminals, and will link with Gwent Police to gather intelligence on suspects in the area.
The irony is that the stolen items are of no real value to anyone outside the railway industry, yet the cost to replace them is extremely high. In fact, the thieves will struggle to get any money at all, as scrap metal dealers are highly unlikely to accept them.
More top news
There'll be clear spells overnight which means temperatures will fall. Setting us up for a dry start to the weekend, but it won't last!
Watch the men who have been making history by taking Wales to the quarter-finals of the European Championships.
Chris Coleman's men have an army of fans all wearing red today. Are you dressed up for tonight? Send us your pics!