Liam Payne has made a plea to fans to “keep it PG” and “restore sanity” on Twitterafter a video was leaked online showing two band members allegedly smoking marijuana.

The clip apparently showed Zayn Malik smoking a joint with Louis Tomlinson chatting about it and laughing in the background.

Liam took to Twitter before the boys’ gig in Sunderland on Wednesday night, writing: “Right everybody concert time lets try and keep the pg rating lol for Christ sake somebody help me restore sanity.”

Right everybody concert time let's try and keep the pg rating lol for Christ sake somebody help me restore sanity

— Liam Payne (@Real_Liam_Payne) May 28, 2014

[related]After the scandal, fans had started a series of hashtags trending including #cutforzoius, #zouispastmethatblunt and #Skinfor1D.

According to E! News, fans even began posting nude selfies on Twitter in support of the band.

Describing the fans' reaction to the video as “weird s**t”, Liam posted a warning: “Whoa… everyone just calm down and don’t do anything stupid cuz u can’t take it back.”

“I know some people are having a laugh and that’s all well and good but some people will take this s**t serious so I suggest we stop.”

I know some people are having a laugh and that's all well and good but some people will take this shit serious so I suggest we stop

— Liam Payne (@Real_Liam_Payne) May 28, 2014

He then suggested fans start a new hashtag trending, writing:

“Today is such a weird day why don’t we do a #wearahoodyfor1d or a #WearAsManyClothesAsYouCanAtOnceFor1D.”