Robert ‘3D’ Del Naja, the founding member of the Bristol band, has been accused of being the guerrilla graffiti star because art keeps appearing near their gigs.
In 2008 former public schoolboy Robin Gunningham was named as Banksy by the Mail on Sunday – and scientists analysing his work also believe it is him.
But now investigative journalist Craig Williams, 31, claims the artist could be Mr Del Naja, or perhaps a team of people led by him and linked to Massive Attack who combine their concerts with graffiti.
Mr Williams has plotted Banksy murals around the world and said that on at least six occasions more than a dozen appeared shortly before or after Massive Attack gigs in the same cities over the past 12 years.
3D was a graffiti artist in the 1980s and has admitted he is friends with Banksy – but the journalist’s new research concludes he may be the artist himself.