Israeli Police arrested a suspect Sunday after footage circulated online showing individuals cheering as air raid sirens sounded warning of Iranian rocket fire toward Israel.

The video, which spread across social media and came to the attention of officers in the Judea region of the Shai District, shows several Palestinians alongside Israeli activists celebrating as sirens blared, signaling that Iran had launched missiles at Israel.

Following a brief intelligence investigation, police identified one of the suspects as a 60-year-old resident of Samu. He was taken into custody for questioning, and authorities said additional arrests are expected among others seen rejoicing in the footage.

In a statement, police said: “The Israel Police will act decisively against anyone who exploits the security situation during wartime to incite against the State of Israel, encourage the enemy, and support harm to the security of Israel’s citizens, wherever they may be.”