The preliminary report said Nissan had installed two sets of security cameras at the entrance to Gupta's house in Tokyo's Shibuya ward, the people said.
Uchida and Gupta, who was still a Nissan director and chief operating officer on June 20, were recused from the board meeting.
In his letter, Nada asked for an international law firm to be brought in to investigate the surveillance of Gupta.
Reuters was unable to determine if either law firm had made any finding about the harassment claim itself, beyond how it was handled.
Nada said in his letter he understood that Japanese law firm Anderson Mori & Tomotsune had investigated the claim.
Persons:
Ashwani Gupta, Makoto Uchida, Davis Polk, Gupta, Uchida, Nissan, Akira Takeuchi, Hari Nada, Nada, Iwata Godo, Motoo Nagai, Nagai, Anderson Mori, Tomotsune, Daniel Leussink, Maki Shiraki, Kevin Krolicki, David Clarke
Organizations:
Nissan, Renault, Reuters, NEW, Senior Renault, Thomson
Locations:
Yokohama, Tokyo's Shibuya, Tokyo, French, Austin , Texas