One Direction Smoking Weed -- Some Creep Stole Our Video

One Direction is gunning for the person they say stole a private video showing Zayn Malik and Louis Tomlinson smoking weed.

The video, which appears on MailOnline, shows the guys enjoying a joint while riding around in an SUV while in Peru.

At one point in the video -- shot earlier this year -- Louis is seen passing Zayn the joint and saying, "One very very important factor of Zayn’s warm up of course is Mary J, herself."

A rep for the band tells TMZ the video was stolen and that the band's lawyers are investigating.