Madonna has dropped some hints about her latest "mystery" project with a cryptic video.

The 54-year-old singer has been hinting about her collaboration with photographer Steven Klein on Instagram over the past few weeks and has now uploaded a teaser video on YouTube.

Fans expecting answers might be left even more baffled from the new video, with the footage featuring a twitching and moving eye and a blurry red shape, with a soundtrack consisting of thuds and alarm rings.

Madonna - who released her twelfth album MDNA in 2012 as well as historical drama 'WE', which she directed - has been stirring up buzz for her forthcoming collaboration, using the hashtag #SecretProject, although there are no further details.

She made headlines this week when she wore a Boy Scout outfit at the GLAAD Media Awards in New York, where she presented US talk show host Anderson Cooper with an award.

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