On the night of Thursday, a man was shot dead in Jordbro, south of Stockholm, another man was injured.
This weekend, a 22-year-old man was detained on probable cause on suspicion of the murder. A 21-year-old woman and an 18-year-old man were also detained on suspicion of aiding and abetting.
The 22-year-old man and woman are registered at an address in Hässelby where there was an explosion on Monday morning, the home was completely destroyed.
According to TV4 News, the police had surveillance at the address in question during the night, but when the detonation occurred, they had left the scene.
Bear Nazi symbols
The 22-year-old has previously been convicted of a number of crimes. Including for hate speech in 2019 because he wore Nazi symbols during a demonstration arranged by the Nazi organization Nordic Resistance Movement, NMR.
"He was a member of the Nordic Resistance Movement. He appeared in their demonstrations, handed out leaflets and actively tried to recruit new members, says My Vingren, researcher at the Expo Foundation.
But according to Expo, he left the far-right milieu in the fall of 2020.
"It is clear that he then chose another, more gang-criminal environment. He has always been romanticising violence, but the targets changed to police and criminals in particular," says My Vingren.
Photographed police
The 22-year-old has also been convicted of offences such as threatening a public official, breaching the Knife Act and several drug offences.
At one point, he was sitting in a car outside a police officer's residence and taking photos of the officer, which he later posted on social media, along with full name and address details.
The latest conviction of the 22-year-old came a day after the fatal shooting in Jordbro when he was sentenced to one month in prison for possession of cocaine and tramadol.
After Monday's explosion in Hässelby, the police have launched a preliminary investigation into general destruction.