The mother of two women murdered by a Satanist teenager as part of a demonic blood pact said justice had been done as he was jailed for at least 35 years.
The Old Bailey heard he had embarked on a “campaign of vengeance” against random women in a failed bid to win the Mega Millions Super Jackpot lottery prize of £321 million.
Hussein, who has autism, declined to give evidence in his trial, claiming he was not responsible for the killings.
He was jailed for life with a minimum term of 35 years after being found guilty of two counts of murder and possession of a knife.
Hussein, who was sentenced at the Old Bailey by video link from Belmarsh jail on Thursday, sat with his back to the court as the sisters’ mother the Venerable Mina Smallman looked on.
Speaking outside court, Mrs Smallman said she had justice for her “beautiful girls”.
On Hussein, she said: “He’s just an obnoxious human being.
“He is a broken human being who, if he had not been caught, four other families may have been suffering what we have.
“Well he ain’t out there now and I think he is so deluded, come 35 years’ time they will not let him out. I will not let them.”
In her sentencing remarks, Mrs Justice Whipple told Hussein: “In the early hours of Saturday 6 June 2020, you brutally murdered Nicole Smallman and Bibaa Henry.
“The two sisters had been celebrating Bibaa’s birthday with a group of friends.
“You had found these two women. You were a stranger to them. You surprised them, you terrified them and you killed them.”
She said Hussein had dragged the bodies away and posed them in an embrace to “defile” them in death.
On the pact with the devil, the judge said: “I am sure that you performed these murders as part of that bargain which you thought would bring you wealth and power.
“Well, the wealth and power did not arrive; and nor did it happen that the police never found out about your crimes.
“I am sure you performed these murders as part of that bargain for wealth and power.
“Bizarre though your pact with the devil may appear to others, this was your belief system, your own commitment to the murder of innocent women.”
She told Hussein: “You committed these vicious attacks. You did it to kill. You did it for money and a misguided pursuit of power.”
Earlier, prosecutor Oliver Glasgow QC ruled out a whole life order for Hussein because of his age.
In preparation for the killing, Hussein bought knives from Asda and a black balaclava on Amazon and signed up to a lottery betting website.
In the early hours of June 6 last year, he stalked his victims as they celebrated Ms Henry’s birthday in Fryent Country Park in Wembley, north London.
Hussein stabbed Ms Henry eight times, before he slashed Ms Smallman 28 times as she bravely fought back.
He then dragged them into bushes where they lay undiscovered for 36 hours.
Over the next 10 days, Hussein spent £162.88 on lottery tickets and bets – all without success.
On the evening of June 6, the sisters’ worried loved ones reported them missing, but officers were not deployed to the park until the next day.
Before they arrived, Ms Smallman’s frantic boyfriend Adam Stone, who could not believe she would have left their pet bearded dragon unattended, found the bodies.
Officers then carried out a painstaking search and identified the DNA of an unknown male from blood on the knife, bodies and surrounding scene.
On June 30 last year, in a major breakthrough, a DNA familial link was made to Hussein’s father, who had a past caution.
Searches of Hussein’s bedroom in south-east London uncovered a book of spells, handwritten demon symbols and two blood pacts.
Jurors were not told of the extent of Hussein’s obsession with demons, spells and potions.
Before the killings, Hussein communicated with others about demons and love potions.
It is believed he was influenced by the work of an American black magician who has associated himself with a British-based Nazi Satanist group known as the Order of Nine Angles (O9A).
Last week, Facebook removed his page and Instagram account and YouTube launched a review.
Anti-fascism campaign group Hope not Hate has renewed its call for the Government to ban O9A.
Two police constables have been charged with misconduct in public office after allegedly sharing pictures of the crime scene on WhatsApp, and are due to enter pleas on November 2.
Separately, the Independent Office for Police Conduct concluded its investigation over the response to the initial missing persons reports.
On Monday, the police watchdog found the level of service provided by the Met over the weekend when the sisters went missing was “below the standard that it should have been”.Internet Explorer Channel Network