Critics of Japan’s plan to hold the Tokyo Olympics despite a fourth wave of coronavirus infections submitted a petition on Friday signed by 350,000 people over nine days calling for the Games to be cancelled. "Stop Tokyo Olympics" campaign organiser Kenji Utsunomiya said the global festival of sport - already postponed from 2020 due to the coronavirus pandemic - should take place only when Japan can welcome visitors and athletes wholeheartedly. "We are not in that situation and therefore the Games should be cancelled," he told a news conference. "Precious medical resources would need to be diverted to the Olympics if it"s held." The petition was submitted to the Olympic and Paralympic committee chiefs as well as Tokyo Governor Yuriko Koike. It came as Japan added three more areas to a state of emergency now covering Tokyo, Osaka and four other prefectures amid surging case numbers, exactly 10 weeks from the scheduled July 23 opening of the Games. read more Asked about the campaign against the Games, Tokyo Governor Koike said she would work towards a "safe and secure" Olympics. "Though there is a global pandemic, it is important to hold a safe and secure Tokyo 2020 Games," she told a regular news conference. The new areas under the state of emergency include Hokkaido prefecture, where the Olympic marathon will take place, after it reported a record high of 712 new coronavirus cases on Thursday. Nationwide, Japan has seen about 656,000 confirmed cases, with 11,161 deaths. Opposition to the Games has also come from doctors, while some high-profile Japanese athletes have expressed concern, including Masters golf champion Hideki Matsuyama and top women"s tennis player Naomi Osaka. Business leader Masayoshi Son, chief of SoftBank Group Corp (9984.T), added his voice to the chorus of trepidation on Thursday, saying in unusually blunt remarks he was afraid of what might happen if the Games went ahead. Lawyer Kenji Utsunomiya shows off placards during a news conference after he and anti-Olympics petition organizer to submit a petition calling for the Tokyo 2020 Olympics to be cancelled to Tokyo Governor Yuriko Koike (not in picture) at the Tokyo Metropolitan Office press club in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura Lawyer Kenji Utsunomiya shows off a placard during a news conference after he and anti-Olympics petition organizer to submit a petition calling for the Tokyo 2020 Olympics to be cancelled to Tokyo Governor Yuriko Koike (not in picture) at the Tokyo Metropolitan Office press club in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura Lawyer Kenji Utsunomiya shows off placards during a news conference after he and anti-Olympics petition organizer to submit a petition calling for the Tokyo 2020 Olympics to be cancelled to Tokyo Governor Yuriko Koike (not in picture) at the Tokyo Metropolitan Office press club in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura 1/2 Lawyer Kenji Utsunomiya shows off a placard during a news conference after he and anti-Olympics petition organizer to submit a petition calling for the Tokyo 2020 Olympics to be cancelled to Tokyo Governor Yuriko Koike (not in picture) at the Tokyo Metropolitan Office press club in Tokyo, Japan May 14, 2021. REUTERS/Naoki Ogura Dozens of towns that had been due to host visiting athletes at pre-Games events have cancelled those plans, saying they could not guarantee medical help amid strains on the health system. read more HUGS "NOT OK" Economy Minister Yasutoshi Nishimura, asked whether the Games would go ahead despite the increase in COVID cases, said organisers were looking to the International Olympic Committee"s backing for the Games. "I am aware that many are concerned that it will lead to an outbreak of cases," Nishimura told parliament. "The organisers are currently working together closely, based on the decision by the International Olympic Committee to hold the Tokyo 2020 Olympics," he said.