Twitter said on Saturday that an official Twitter account of the Olympics and the International Olympic Committee’s (IOC) media Twitter account had been hacked and temporarily locked.

Barcelona's Twitter accounts were hacked after the team's 2-1 home win over Getafe in the Spanish league on Saturday.

The accounts were hacked through a third-party platform -- a group calling itself “OurMine” posted a fake image hinting that the Barcelona club had re-signed Brazilian forward Neymar. It also posted a message noting that it was the second time it had hacked the club. It said that “the security level is better but still not the best," and added information on how it could be contacted to help “improve” the accounts' security.

“As soon as we were made aware of the issue, we locked the compromised accounts and are working closely with our partners to restore them,” a Twitter spokesperson said.

“FC Barcelona will conduct a cybersecurity audit and will review all protocols and links with third party tools, in order to avoid such incidents,” the soccer club said in a tweet after the hack.

Last month, the official Twitter accounts of several U.S. National Football League (NFL) teams, including the San Francisco 49ers and Kansas City Chiefs, were hacked a few days ahead of the Super Bowl.

Earlier this month, some of Facebook’s official Twitter accounts were briefly compromised.