Israeli police reportedly arrested or detained three suspects in connection with fires that broke out on Wednesday near Jerusalem, amid soaring temperatures and fierce winds, and led to the cancellation of many Independence Day events.

The suspects, who were not identified or described in initial reports in the Israeli media, were arrested within several hours of the fires, which forced evacuations, road closures and the quashing of Israel’s state Independence Day torch-lighting ceremony.

According to widespread Hebrew media reports, the Israel Security Agency (Shin Bet) joined in the investigation into the fires, suggesting authorities believe the fires were the result of terrorist arson attacks.