A former betting shop in Midlothian was deliberately set ablaze resulting in thousands of pounds of damage.
A group of youths were spotted on the roof of the building moments before the fire broke out on Saturday.
A group of youths were seen on the roof of the building just before the blaze broke out and police are appealing for witnesses.
Lothian and Borders Fire and Rescue Service were called to the derelict building inWoodburn Road, Dalkeith, at 9.30pm and managed to put out the flames.
A Lothian and Borders Police spokesman said: “A group of male youths were seen on the roof prior to the fire breaking out, and we are keen for any information that can help us identify them.
“Anyone who was in the area at the time, who noticed any suspicious activity, should contact police immediately. Similarly, anyone with any other information that can assist our inquiries should also get in touch.”
Anyone with any information should contact Lothian and Borders Police on 0131 311 3131 or through Crimestoppers on 0800 555 111