Richard Leonard has written to the First Minister demanding to know why she opted to let Mackay resign from her cabinet.
The former finance secretary was forced to resign just hours ahead of delivering the budget on Thursday.
The distinctive triangular child’s purse, containing eight coins and a Girl Guides badge, was found by a metal detecting enthusiast.
Man in his 70s was airlifted to hospital with head and chest injuries.
The support worker has been struck off by the Scottish Social Services Council.
The new year event will be streamed on Facebook and the event's website.
Zilvanas Popovas, 38, knifed Tomas Svezas, 22, during an argument in Falkirk.
Neale Hanvey had been due to contest the Kirkcaldy and Cowdenbeath constituency.