From Reuters via the ABC (Australian Broadcasting Corporation) :

A gun battle just outside Kuwait City has left five people dead.

State television says a policeman, three suspected militants and a civilian were killed during a raid on a suspected Islamic militant hideout.

One militant suspect is reported to have been arrested.

Witnesses say police fired rocket-propelled grenades and machine guns at two buildings they had surrounded in the Salmiya district near the largest American military base in Kuwait.

The gun battle came just days after another clash left three people dead and a day after the Government and the US embassy warned more militant attacks were possible.

The British and French embassy had also warned their citizens to be vigilant. Two Kuwaiti security officers and two gunmen were killed in clashes between police and militants earlier this month.