The Instagram app appears to be suffering an outage, with users in the US reporting that the app is crashing when they try to open it on their smartphones.
The online photo-sharing and social networking service has been having issues since 09:57 EDT (14:57 BST) according to website DownDetector.com, which monitors online outages.
The site's outage map shows that the problem is mainly affecting users on the East and West Coasts of the United States.
"I click on the app and it would show my feed but a few seconds after it goes black and it crashes," one user wrote on the DownDetector forum.
"Same, I'm trying to text a friend but it keeps crashing as soon as I open it," another user replied.
"I am not able to even open the app. It allows me to click on it and then the screen goes black," another wrote.
Many Instagram users took to Twitter to share videos of their apps crashing.
The issue coincides with a bizarre Facebook glitch that has resulted in the 'Status Update' box disappearing from users' news feeds, leaving them unable to post comments, photos or videos.
Facebook, which owns Instagram, has not yet commented on the cause of the problems.
