Kuwait held a military funeral on Monday for two interior ministry officials it said were killed "while performing their duty".
The state - which hosts US military installations and has come under Iranian drone and missile fire during Tehran's war with Israel and the US - said the two men died early on Sunday, but did not go into further details.
Kuwait's army separately said areas near the international airport were hit on Sunday and its forces had intercepted missiles and drones.
The Interior Ministry said on Sunday it mourned "the martyrs of duty, Lieutenant Colonel Staff Abdullah Emad Al Sharrah and Major Fahad Abdulaziz Al Mejmed, from the General Administration of Land Border Security, who were martyred at dawn".
The funeral in Sulaibikhat Cemetery was led by First Deputy Prime Minister and Interior Minister Shaikh Fahad Al Yousef Al Sabah, along with other senior figures.
Authorities there say five people have been killed since the start of the Iran crisis, including four military personnel and a young girl, and dozens have been wounded.