I saw new news, too.
http://www.asahi.com/international/update/0718/TKY201007180362.html
I think that the two people are unrelated.
Because the family name of Ito is numerous in Japan.
http://www.myj7000.jp-biz.net/1000/0100f.htm
Ito is a lot of family names in sixth in Japan that are.