A hacking group has claimed responsbility for taking down the Pokémon Go servers using a DDOS attack.
A DDOS, or Distributed Denial of Service, is a way troublemakers crash servers by flooding them with so many requests every second that they cannot cope.
A cyber collective known as PoodleCorp announced on Twitter it was behind the action, but this claim is yet to be verified.
The account also retweeted a post by a user claiming to be the leader of PoodleCorp.
https://twitter.com/PoodleCorp/status/754298236093857792
PoodleCorp has recently targeted high profile YouTubers such as Pewdiepie.
Pokémon Go servers also crashed earlier in July soon after launching, due to unprecedented demand.