The British pop star was pictured leaving the Cirque le Soir nightclub in London with five girls at 4am (local time) on Thursday morning (23Apr15), and he was later snapped making what appears to be a joint at The Soho Hotel.
The image was taken by an onlooker during a party at the hotel and shared on cell phone messaging app Snapchat before it was published by Dailymail.com on Thursday.
In the picture, Tomlinson, who recently split from girlfriend Eleanor Calder, is sat on a sofa with a rolling paper in his hand and a plastic container filled with a dry, green substance is resting beside him.
The incident comes almost a year after Tomlinson and his former bandmate Zayn Malik were caught on video smoking what they called "a joint" in a car during a tour stop in Peru.
A representative for Tomlinson had not responded to a request for comment as WENN went to press.