TORONTO -- Facebook is reassuring users that it has not been secretly collecting video of them, saying it鈥檚 now fixed a 鈥渂ug鈥 in its app that turned iPhone cameras on in the background.

After users posted to Twitter showing that the camera activated when they opened a photo or mode.

In a , Facebook's vice president of integrity, Guy Rosen, acknowledged the glitch and said no content was recorded, stored or uploaded in any incident.

鈥淲e鈥檝e confirmed that we didn't upload anything to (Facebook) due to this bug and that the camera didn鈥檛 capture anything since it was in preview mode,鈥 .

A new, corrected version of the app was submitted to the App Store, Apple鈥檚 distribution platform for smartphone apps, and was 鈥渁lready rolling out鈥 on Tuesday, he added.

The social media goliath, which recorded more than US$55 billion in , has faced increasing scrutiny around privacy issues in recent years, including the Cambridge Analytica data scandal in user information was sold for political purposes. The company has long denied that it eavesdrops on users for ad-targeting purposes.