Updated

Finland says two of its citizens have been killed in a cave-diving accident in northern Norway.

Finnish Foreign Ministry spokeswoman Tytti Pylkko said Friday the two were in a group of five Finnish divers, but had no further details.

Police in Norway's Helgeland district confirmed they were alerted early Friday to a diving accident near Mo i Rana, some 1,000 kilometers (620 miles) north of Oslo. A police statement said two people were killed and three others flown to a nearby hospital.

The cave system, fed by the Plura River, is considered Norway's largest water-filled cave and is popular among divers. Local media said a 37-year-old Norwegian diver died in the same caves in 2006 when he tried to set a new deep-diving record.