The investigation in Stockholm concerned one of the two men now charged with incitement to murder after the shooting at Coop in Norrliden last winter.

Putting together "murder squads"

Johan Henningsson, prosecutor, talks about the secret eavesdropping that led to the quick arrest after the shooting outside Coop in Kalmar.

The Stockholm police suspected that the man was putting together "murder squads" that carried out murders to order, and tapped his phone in the days after the attempted murder in Kalmar, says Johan Henningsson:

"There, he talks to instigator number two and the police realize, 'Wait a minute, they're talking about this shooting in Kalmar.'

Would get 100,000

The 15-year-old who is now charged with the attempted murder, the shooter, is also identified thanks to the secret wiretap.

"They discuss what went wrong, why didn't he die, and what compensation will the shooter get and so on.

According to the investigation, the 15-year-old shooter should have received SEK 100,000 for the murder. The motive has not been fully clarified, but the shot 16-year-old is considered to belong to the Norrliden gang that stands on one side in the bloody conflict in Kalmar and the murder seems to have been ordered.

Burned clothing evidence

In addition to the wiretap, the prosecution's evidence consists of DNA traces of clothes that the shooter allegedly tried to burn afterwards, as well as witness observations and pictures in the shooter's phone that he sent of himself to the two men in Stockholm just before the murder.

But without the alarm from the Stockholm police, it would not have been certain that they could have prosecuted anyone today, says Johan Heningsson.

"It would have taken much longer.

All seven defendants deny any wrongdoing and have made no comment during the investigation.