Harry Potter star Daniel Radcliffe "categorically" denied he had smoked a cannabis joint at a party after pictures emerged of him allegedly using the drug.
The 20-year-old actor reportedly lit up at a gathering in a friend's flat in Camden, north London.
He was laughing and declaring that he loved weed as he let a girl draw a comedy beard on his face, a fellow partygoer alleged.
But the film star said he had not smoked anything other than tobacco.
A spokeswoman for Radcliffe said: "Daniel does smoke the occasional roll-up cigarette, but he was not doing anything more than this.
"We are considering our position and will be taking all necessary action in relation to such allegations."
Radcliffe is currently filming the first part of Harry Potter And The Deathly Hallows.