Twitter says 130 accounts were targeted in a major cyber-attack of celebrity accounts two days ago.

Axar.az reports citing foreign media.

However, Twitter says only a "small subset" of those 130 accounts had control seized by the attacker.

The security breach saw accounts including those of Barack Obama, Elon Musk, Kanye West and Bill Gates tweet a Bitcoin scam to millions of followers.

Twitter said it was still trying to work out if private data - which could include direct messages - was stolen.

"We're working with impacted account-owners and will continue to do so over the next several days," the company said, through its official support account.

"We are continuing to assess whether non-public data related to these accounts was compromised," it added.

The FBI is now investigating.