UN Secretary General Antonio Guterres sends his condolences on the death of Father Stan Swamy, an activist for Adivasi causes and a Catholic priest, his spokesperson Stephane Dujarric said on Tuesday.

"We send our condolences to his family and his friends, but I think it's one of these cases where there needs to be clarity around when and how he passed away," Dujarric said answering a question at his daily briefing about the death of Swamy who was awaiting a court decision on a bail application. Earlier, a spokesperson for UN High Commissioner for Human Rights Michelle Bachelet said she is "deeply saddened and disturbed" by the death of Swamy.