John Sauven was turned back immediately upon arrival at Jakarta’s airport on Thursday.

He was supposed to meet with government officials and businessmen before visiting rainforests threatened by ever-expanding plantations.

A spokesman for the Justice and Human Rights Ministry says Sauven was informed through Indonesia’s Embassy in London he would not be allowed to enter even though he’d been granted a visa.

The spokesman said Friday the decision was based on reports by Greenpeace that had created “difficulties” for the Indonesian government.