Pop star Liam Payne is reportedly the victim of a cyber-security breach as hackers posted pornographic images on his Facebook page.

According to editors at Britain's OK! magazine, fans of the One Direction star were shocked to see the explicit posts appear on Monday (05Dec16) his social media page, which has more than 10 million likes.

Shocked followers of the 23-year-old musician, who is dating former Girls Aloud star Cheryl, 33, alerted the star to the posts, which were subsequently deleted from his page.

The incident is the second security breach affecting the couple in recent months. In October (16) Cheryl's Instagram was hacked and defaced with satanic imagery and an offensive message about Liam.

The couple have regularly been in the headlines this year (16), with their whirlwind romance and rumors of a baby on the way fascinating fans.

Cheryl silently confirmed reports she is set to have Liam's child when she was pictured with a significant baby bump during an appearance at a charity event with her beau in London last month (Nov16).

Representatives of Liam have been contacted for comment on the reported hack.