Police say they need more people to come forward with information after four vehicles including an ice cream van were set on fire.
The vehicles were all destroyed in the fires which happened on four separate nights in the past week in Annan.
More top news
Spells of rain overnight will give way to a sunny day tomorrow.
Visitors to Bassenthwaite who haven't yet visited the lake's popular ospreys only have a few weeks left to see them up-close.
Two new primary schools in the Borders have welcomed pupils for the first time today, Wednesday 16 August.