A Norwegian citizen of Somali origin is suspected of involvement in the terror attack on a mall in Kenya last month, authorities in Norway say.
The PST security service says it has received information suggesting the Norwegian "was involved in planning and carrying out the attack" that killed at least 67 people. It did not name the suspect.
PST said its agents were in Nairobi, working with Kenyan authorities investigating "to what degree" the Norwegian was involved and his links to al-Shabab.
But the agency said the main goal of the investigation was to prevent any future attacks.