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A video of Marilyn Monroe allegedly smoking marijuana has been made public some 50 years after it was filmed.

The film was recently bought for $275,000 (£166,000) by US collector Keya Morgan, who is making a documentary on the death of Monroe in August 1962.

He tracked it down to an attic in New Jersey - the person who filmed it said it was taken at an informal gathering in 1958 or 1959.

The film shows a personal side rarely seen in public since the actress achieved stardom.

At one point in the film, Marilyn points her nose toward her armpit and laughs.

The original film-maker - who has asked for anonymity - said the cigarette in the footage contained marijuana.

"I got it - it was mine. It was just passed around," they said.

"It was not a party. It was just a get-together. You know, 'come over and hang out'."