On Monday, police said two other suspects – a Somali national in his 40s and a Norwegian national in his 30s – had been arrested on Sunday. Both are known to police, authorities said, adding that they reside in Oslo.
They face preliminary charges of “complicity in an act of terrorism”, police said.
The suspect who has not yet been arrested, Arfan Bhatti, is believed to be in Pakistan. Norwegian police said that “to ensure the best possible cooperation with the Pakistani authorities, we recently had officials from the Oslo Police District in Pakistan. ”
Bhatti reportedly posted statements online about killing gay people. Media reported that he knew Zaniar Matapour, the main suspect in the June 25 attack which the Norwegian police security service described as an “Islamist terrorist act”.
Matapour, who according to Norwegian media arrived in Norway with his family from a Kurdish part of Iran in the 1990s, faces preliminary charges of murder and attempted murder.
The names of the suspects arrested on Sunday have not been given.