A man was found dead in a summer house in Grímsnes, southwest Iceland, last weekend. The deceased had suffered injuries to his head and police authorities have confirmed that his death was caused by human intervention.
The cause of death is however unknown; autopsy has yet to be undertaken, Fréttabladid reports.
Four individuals, two men and two women aged 18 to 32, are currently in police custody in relation to the case. Three of them were arrested in the summer house but the fourth was arrested shortly afterwards in Reykjavík.