This was the second Hezbollah-affiliated cell to be arrested in Kuwait this week, as the Gulf faced daily Iranian attacks during the Middle East war, which has seen Tehran-backed groups including Hezbollah in Lebanon join the conflict.

On Monday, Kuwait's interior ministry said it arrested 16 people -- 14 Kuwaitis and two Lebanese nationals -- affiliated with Hezbollah who had planned a "sabotage plot".

"Hezbollah affirms its categorical and absolute denial of all the false claims and accusations made by the Kuwaiti interior ministry regarding the existence of any cells, networks, or alleged plots within the State of Kuwait," the Iran-backed group said in a statement.

Kuwait's interior ministry had announced on Wednesday that "the State Security Agency has successfully thwarted a plot for a terrorist operation targeting vital installations".

"Ten citizens, members of a terrorist group affiliated with the banned Hezbollah terrorist organisation were apprehended," it added.

In previous years, Lebanon has experienced tensions with Gulf states, including Kuwait, which have expressed concern about Hezbollah having influence in the country.