New Delhi, Feb. 19 -- Scores of illegal luxury mansions have been built in a national park that serves as an important environmental buffer for Sierra Leone 's capital and the government has done little or nothing about it, an investigation shows.

The Associated Press and The Gecko Project exclusively obtained the results of a government investigation into the illegal construction that has never been shared with the public, almost four years after President Julius Maada Bio commissioned it. It found that senior government officials handed out land ownership documents.

In a visit, the AP found that construction continues.

The mansions are in the Bio Barray neighborhood, part of which has been built illegally in the mountainous Western A...