Russian Prime Minister Vladimir Putin said Tuesday his country would raise the controversial issue of who should investigate Israel's deadly raid on a Gaza aid flotilla at the United Nations. "Unfortunately, this act happened in international waters, which is another source for concern," Putin said during a press conference on the sidelines of an Istanbul summit on security in Asia.

Nine Turks were killed in last week's Israeli raid on a six-vessel international flotilla shipping relief supplies to the Gaza Strip which is under an Israeli embargo. Putin stressed the need for calm and for a thorough and comprehensive investigation at the press conference also attended by Turkish counterpart Recep Tayyip Erdogan.

Copyright Agence France-Presse, 2010