Israel is resisting international pressure over the flotilla raid this week in which nine people were killed while trying to run the blockade of the Gaza Strip.
Israel has rejected demands by the United Nations for an international investigation into the deadly raid on the flotilla carrying pro-Palestinian activists.
Foreign Minister Avigdor Lieberman said Israel is a mature, democratic country that is capable of conducting its own investigation. But in an interview on Israel Radio, he left the door open to foreign participation.
"The investigation must be Israeli," he said, adding that international observers could be invited to take part.
