Photograph taken of 23-year-old boy band star partying in London . Appears to be rolling a joint and is beside box of green substance . Tomlinson has been partying hard for 48 hours and went clubbing last night . The picture was posted on the Facebook page of one of Tomlinson's friends, who said he had seen him at around 1am with his girlfriend. Bandmate Liam Payne then issued apology for video .
Photograph taken of 23-year-old boy band star partying in London . Appears to be rolling a joint and is beside box of green substance . Tomlinson has been partying hard for 48 hours and went clubbing last night . Comes after Tomlinson appeared on exclusive Daily Mail Online video in which Zayn Malik appeared to smoke drug . Bandmate Liam Payne then issued apology for video .