Two seminal works attributed to Dutch medieval master Hieronymus Bosch could instead be by his followers, according to an Agence France-Presse report citing Dutch media. Cutting edge technology, including ultrahigh-resolution digital macro photography, used by researchers preparing for an upcoming exhibition on the artist led to the conclusion.

Among his most famous paintings, "Christ Carrying the Cross" (around 1515-16), housed at the Museum of Fine Arts in the Belgian city of Ghent and the Prado's "The Seven Deadly Sins" (circa 1500) are likely made by others working in Bosch's studio, public news broadcaster NOS reported.

Additional revelations by the Bosch Research and Conservation Project (BRCP), which has been studying and documenting the early Dutch master's works since 2010, will be part of a new documentary released this month.

A major exhibition bringing together most of the known Bosch works is planned for the 500th anniversary of his death in 2016. The Dutch city of 's-Hertogenbosch will host an extravaganza of events related to the show at its Noordbradbants museum.