Four teenager have been arrested as police and firefighters investigate a serious fire at Shire Hall in Llangefni.

Emergency services were called shortly before 10pm last night (December 17) where a derelict building on Glanhwfa road, Llangefni, was on fire.

The building is Anglesey Council's former headquarters.

Surrounding roads in the area were closed while emergency services dealt with the incident.

Four teenagers have been arrested on suspicion of arson and are currently in police custody while enquiries continue.

Detective Inspector Richard Griffith said: “We believe that this fire was caused by deliberate ignition and our investigations are underway to understand the circumstances.

“I am appealing to anyone who may have been in the area yesterday evening and may have witnessed the incident or may have dashcam or phone footage to contact us.

“We thank the local community for their patience and support whilst emergency services dealt with the fire.”

Anyone with information which might assist in our investigation is asked to contact police via our website or by calling 101, quoting reference A198000.