Foster 'sorry' she did not control costs
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RHI scandal: Arlene Foster 'sorry' she did not control costs

16 December 2016 Last updated at 13:47 GMT

First Minister Arlene Foster has said she is "sorry" that she did not put in cost controls when she set up a green energy scheme that landed taxpayers with an extra bill of £400m.

The DUP leader was speaking to the BBC's Stephen Nolan.