Hashem Abedi, a 23-year-old man who helped his brother kill 22 people in a suicide bomb attack in the English city of Manchester, was jailed for at least 55 years on Thursday (August 20) for his crimes.
He was found guilty of murder in March, for encouraging and assisting his brother Salman, who blew himself up at the end of a concert by U.S. pop singer Ariana Grande three years ago.
Among the dead were seven children.
The youngest was just eight years old.
A further 237 people were injured in the atrocity, which happened as parents arrived to collect their children at the Manchester Arena.
The judge said the brothers - born to Libyan parents who emigrated to the UK - were equally culpable and had deliberately targeted a concert attended by younger people.
He jailed Abedi for life - for murder and conspiracy to cause an explosion - and said he would serve at least 55 years in jail.
Abedi wasn't in court for the sentencing.
He'd refused to enter the courtroom, where distraught families of victims had given harrowing accounts of the devastating impact the bombing had had on their lives.