Two US nationals have been arrested after one jumped into the enclosure of an internet-famous monkey at a Japanese zoo while the other filmed the stunt, police have said.

An American man wearing a costume broke into a Japanese zoo enclosure over the weekend that houses Punch, a baby macaque who became a global internet sensation earlier this year for his bond with a pl...

ABC News' Japanese partner network NHK reported that the two men arrested are U.S. nationals in their 20s.