Alex has blocked the release of Robert Brown - who bludgeoned his wife Joanna Simpson to death within earshot of their young children in 2010 - and has asked the Parole Board to reconsider its decision.
Brown was convicted of manslaughter and was due to be freed in November after serving half of his 26-year sentence.
"Joanna Simpson was bludgeoned and buried at the hands of Robert Brown, which left two children without a mother and caused irreparable harm to her family and loved ones.
"I made a commitment to Joanna’s family that I would give this case my closest personal attention.
"Having reviewed all the information available to me, I have blocked Brown’s automatic release and referred this case to the parole board using powers we introduced to protect the public from the most dangerous offenders."