Picture taken on January 17, 2019 in Oslo shows the supermarket where a woman was stabbed in a knife attack which is said to be terror related. - A man stabbed a woman in a shop in central Oslo on Thursday January 17, 2019 in broad daylight. The woman is in critical but stable condition in hospital, and the suspect was arrested shortly afterwards. "There are reasons to examine whether the knife attack was terror-related and the investigation will try to clarify this," Benedicte Bjornland, the head of Norway's domestic intelligence service PST, told reporters. (Photo by Terje Bendiksby / NTB Scanpix / AFP) / Norway OUT

In this Thursday, Jan. 17, 2019 photo, a police officer walks at the scene of a knife attack in Oslo. Police in Norway say the stabbing of a woman in a supermarket is being investigated as a terror attack. (Terje Bendiksby/NTB Scanpix via AP)