Earlier this week, a video emerged on the Internet showing the boys on tour in Peru, bragging about the rolled up cigarette they were smoking which Louis refers to as a "joint", with many of the group’s fans expressing how disappointed they were at the thought that they may have been using drugs.
According to reports, the group are now determined to find out how the video - believed to be recorded by Louis using Google Glass - leaked online in the first place.
A source close to One Direction told The Mirror: “The boys insist the footage has been stolen from them and are not happy.
"They want to get the video removed and to draw a line under the incident and move on.”
A statement from the band’s spokesperson also confirmed earlier this week: “The matter is now in the hands of our lawyers.”
The boys didn’t acknowledge the controversy during their gig at Sunderland’s Stadium Of Light the night after the video surfaced, though band member Liam Payne did send out a tweet before the concert asking for someone to help him “restore the sanity”.
Meanwhile, the footage has also caused controversy for a whole other reason, as during the 5-minute clip it’s alleged that Louis can be heard using a shortened racial slur.