Nicola Sturgeon has refused to rule out the possibility of a third referendum if Scotland votes to remain part of the UK next time.
The Scottish First Minister was taking part in a BBC Question Time programme in Edinburgh ahead of the general election on Thursday.
She was asked twice if she would respect the result of the second referendum for a set period of time if the country voted to stay in.
In reply, Sturgeon said it wouldn't be right to tie the hands of Scottish people by making such a pledge, which drew groans from the gathered audience.
The SNP leader endured a difficult half-hour on the programme, where she was routinely criticised for her agenda in pursuing a second independence referendum and forced to confront questions about approval ratings.
She also faced a difficult audience, one of whom asked her to resign over the SNP's record on education.