A man has been jailed for at least 20 years for the murder of his brother and attempted murder of his brother's girlfriend by setting fire to them as they slept on New Year's Day.

Blair Logan poured petrol on his younger brother Cameron, 23, and the bed he was sharing with Rebecca Williams at their family home in Milngavie, East Dunbartonshire.

Ms Williams was rescued from the fire and treated in hospital, while Logan's parents were treated for smoke inhalation.

In a statement after the sentencing, Ms Williams said the murder was a "calculated and intentional act" and described how she watched her boyfriend die "in the most cruel way, in front of my eyes".

Logan, 27, pleaded guilty to charges of murder and attempted murder last month and was given a life sentence with a minimum of 20 years in jail at the High Court in Edinburgh on Friday.

The two brothers were said to have a "hostile" relationship and Logan told police they had not spoken since the death of their grandmother in 2013.

The accused admitted pouring petrol "with the intention of maiming or crippling" Cameron but claimed he did not mean to kill him.

The attack was said to be in retaliation for a recent incident at the house when his brother had punched him.

A computer seized from Logan's bedroom showed that from October 2016 he had carried out internet searches on burns victims.

Judge Lady Scott said Cameron had died a "horrible death" and Logan "acted with wicked recklessness".

The judge accepted court reports that he had "abnormal personality traits" but said there was no suggestion that Logan had a mental disorder and was fully criminally responsible for his actions.

The 27-year-old, who was a Tesco store assistant, admitted killing his brother during a police interview on January 13.

He told officers: "It was not my intent to kill him but I did do it." When charged with the attempted murder of Ms Williams, he said: "I thought she was out of the room", and added: "I did not wish to murder my parents."

Logan had also admitted endangering the lives of his parents David and Catherine in the blaze, in which the family dog Gomez was also killed.

In mitigation, defence QC Shelagh McCall said Logan had shown genuine remorse and views the murder of his brother as "horrific" and that it cannot be justified.

She referred to a letter that his parents had written to the court which said they "find it extremely difficult to reconcile the Blair they know with the Blair who caused Cameron's death".

Both parents were in the court room in Edinburgh, along with Ms Williams and her family, as the sentence was passed by Lady Scott.

Ms Williams' father Phillip made a statement on behalf of his daughter thanking family and friends, emergency services and her employer Global Radio, where she worked as a broadcast journalist, for their support.

She said: "I find it almost impossible to put into words the devastating impact this cowardly act has had upon me and my family.

"Cameron was my best friend and partner. He was a caring, respectful and loving man, who I wanted to spend the rest of my life with.

"He had great ambitions to join the police force and was working hard towards building our future together. A future that has now been stolen from us."

She added: "The horror of what happened in that room will haunt me forever. It was a calculated and intentional attack.

"Cameron died in the most cruel way, in front of my eyes. I can only imagine the pain and suffering he will have experienced in his final moments. I wish more than anything that I could have saved him.

"The actions of one evil individual cannot be undone. The length of the sentence imposed today was never going to be enough for such a barbaric and ruthless murder. Nothing will ever bring back my beloved Cameron."