Alongside the Colonna report, a more detailed assessment was sent to the UN by the three Nordic research bodies the Swedish-based Raoul Wallenberg Institute of Human Rights and Humanitarian Law, the Norwegian Chr Michelsen Institute, and the Danish Institute for Human Rights.
Their report says: Israeli authorities have to date not provided any supporting evidence nor responded to letters from Unrwa in March, and again in April, requesting the names and supporting evidence that would enable Unrwa to open an investigation.
https://www.theguardian.com/world/2024/apr/22/israel-unrwa-staff-terrorist-links-yet-to-provide-evidence-colonna-report#:~:text=Israel%20has%20yet%20to%20provide%20supporting%20evidence%20of%20its%20claims,minister%20Catherine%20Colonna%20has%20said.
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The actual investigation into the Israeli claims is still ongoing.
A separate investigation by internal U.N. investigators is looking into the Israeli allegations against the 12 UNRWA staff. The U.N. said last week that the U.N. Office of Internal Oversight Services (OIOS) has had "a number of meetings and cooperation from the Israeli authorities on this.
https://www.reuters.com/world/middle-east/review-says-unrwa-has-robust-neutrality-steps-issues-persist-2024-04-22/
This is why it's important to read actual stories and reports, rather than headlines and why providing links is helpful.