Two people have been arrested following the shooting near the Israeli embassy in Stockholm on 17 May.
They are suspected of aiding and abetting this crime and will be questioned with a public defender, says prosecutor Rasmus Öman, who is leading the investigation.
The incident on 17 May is one of those that the Israeli intelligence service Mossad has pointed out as an Iranian contract job.
According to the information, which has been reported by, among others, The Jerusalem Post, the criminal network Rumba, led by the wanted Ismail Abdo from Uppsala, carried out the shooting on behalf of Iran.
The information has not been commented on by the prosecutor.
Unfortunately, I cannot comment on the investigation beyond saying that it is ongoing, says Öman.
Previously, another person has been suspected of aiding and abetting serious weapons offences in the case, but that person is not in custody.
A boy under 15 years old who was arrested shortly after the incident is suspected of having fired the shots. Since he is not criminally liable, he is not formally suspected in the investigation.
The Security Police have confirmed Israel's information that Swedish gang criminals are being used by the Iranian intelligence service to commit violent crimes in Sweden targeting Jewish and Israeli interests, although without naming specific networks or incidents.