At about 3.30am on Tuesday (April 8) the culprit daubed offensive graffiti on an advertising billboard on Bank Street, Alexandria and a nearby wall on India Street.

In February, cops released CCTV images of two incidents in January and September of last year, they believe to have been carried out by the same man.

On Friday, September 20 at around 4am, the suspect smashed the windows of the job centre and then tried to set fire to the inside of the premises thankfully causing only slight damage. More recently, on Wednesday, January 1 — at around 3.45am — the suspect spraypainted a swastika and anti-government graffiti onto the Job Centre Plus on Bank Street and a nearby butcher’s shop.

The CCTV image from September shows a man with his head covered with a plastic bag, wearing a distinctive knee length light-coloured camouflage jacket, with a black leather jacket underneath and light coloured trousers. The bike used is a man’s mountain bike with a distinctive white basket on the front.

The image captured in January shows a man aged between around 40 and 50-years-old, wearing a camouflage jacket, a checked flat cap, and light coloured trousers. He has the lower half of his face covered with a scarf and was again riding a mountain bike.

Inspector Neil Smith, of Dumbarton Police Office, has issued a fresh appeal for information. The inspector told the Reporter: “This latest incident is another in a series of attacks on the job centre stretching back over a significant period of time.

“The evidence points to the same individual being responsible for all these crimes and I am certai the local community hold the key to identifying this person.

“I would appeal to the public to come forward and provide the information we need to arrest this individual who has caused a considerable amount of distress to staff within the Job Centre, as well as fear and alarm to the local community.” Anyone with information which can help track down the suspect should contact police on 101 or alternatively, anonymously via Crimestoppers on 0800 555 111.