More Japanese companies have decided against sending executives to Friday’s opening ceremony for the Tokyo Olympics as concerns about holding the games during the pandemic grow.

Senior officials from Nippon Telegraph & Telephone Corp., Fujitsu Ltd. and NEC Corp. will skip the event given that organizers decided to hold the games without spectators, spokespeople for the technology giants said Tuesday, a day after Toyota Motor Corp. announced its top executive wouldn’t attend.

Japan’s pledge to hold a safe and secure games is coming under threat as COVID-19 cases jump in Tokyo and visiting athletes test positive for the virus. In a fresh public relations setback, Japanese musician Keigo Oyamada, known as Cornelius, quit the team creating the opening ceremony after acknowledging he bullied school classmates with disabilities years ago.