The hand grenade that detonated in the family's bedroom last April caused a massive fire. The mother of the family and one of her children were seriously injured, the woman so badly injured that both her legs had to be amputated.
The attack, which is believed to be linked to a drug deal, was mistakenly targeted at the family, which has no criminal connections.
A total of five people have now been sentenced to prison by Södertörn District Court for their involvement in the bombing. One person has been acquitted.
A man in his 30s was, according to the district court, the mastermind behind the bombing and was sentenced to life imprisonment for attempted murder, among other charges. The man was also convicted of instigating a serious unlawful threat related to a bombing in Skärholmen a few weeks earlier.
Three other people were given long prison sentences and one was sentenced to closed youth care.
For the Skärholmen attack, a man was previously sentenced to seven years in prison for causing serious public danger and for serious unlawful threats.
