A former BBC reporter is claiming that the U.K. broadcaster “buried” footage that he captured of Banksy at one of his mural sites in New York City.

Nick Bryant, who previously served as the BBC’s New York correspondent, detailed his encounter with the anonymous British street artist and political activist in a recent post on his Substack.

After establishing a relationship with Banksy’s team while covering the artist’s residency in NYC in 2013 for the broadcaster, Bryant said he “kept in touch with his PR team.”