Our Scotland Political Editor Peter MacMahon spoke to the Prime Minister during his visit to the Scottish Conservative Conference.
Watch the full interview on independence - and how it could affect the border - here:
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60-year-old Frank Robertson doused Vaughan Livesey in flammable fluid which he lit with a 10-inch blow torch flame inside the victim's shop.
A fundraising page created by a Lake District chef, who died following the London Marathon, has seen donations top £90,000.
29-year-old Matt Campbell collapsed after running 22.5 miles. He received medical treatment at the scene, but died later in hospital.