A British man has reportedly been stabbed to death in Portugal while taking part in an online challenge.
The unnamed 36-year-old's body was found in the middle of a forest near the town of Pedrogao Grande, local media reported.
An unnamed 26-year-old, also understood to be British, has handed himself in to police.
He was among a group of three people who were being interviewed by police concerning the death.
A bladed weapon has also been recovered from the scene.
The group was reportedly playing an internet challenge believed to have started in Russia, which involves a series of often dangerous challenges and has been linked to numerous deaths around the world.
Local media said there was a disagreement during the game that ended in the death, citing a source from the Republican National Guard.
They reported the group of three people then went to a nearby police station to alert officers.
The alleged killer was taken into custody and Portugal's Policia Judiciaria took over the investigation.
Those being questioned by police are thought to be part of a group of foreigners living in a nearby commune.
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