HIROSHIMA (Kyodo) Hiroshima and Nagasaki will continue to explore the possibility of cohosting the 2020 Summer Olympic Games despite a negative response from a key International Olympic Committee executive, officials said Tuesday.

"We understand that we have to overcome towering hurdles, though we haven't received an official response from the IOC side," said Koji Utsunomiya, head of Hiroshima's sports promotion division.

Nagasaki Mayor Tomihisa Taue said, "We will come up with necessary measures after hearing the actual reasons (for the negative comments)."