Lucknow: Investigating the Taj Corridor controversy on a Supreme Court directive, the Central Bureau of Investigation (CBI) questioned Uttar Pradesh environment director I P Singh and other officials on the funding of the controversial project and collected documents pertaining to it.

Singh was summoned by CBI on August 23 and was quizzed for over two hours to ascertain who released Rs 17 crore for the project and about the alleged irregularities, sources said.

The CBI also collected documents pertaining to the controversial project from officials of the state pollution control board, who were also questioned, they said.

The questioning, pertaining to release of funds for the project, assumes significance as it follows a Supreme Court directive to CBI to interrogate "important persons" in the Taj Corridor controversy.

The agency had already questioned the suspended principal secretary (environment) R K Sharma.

PTI