Diageo has been hit with a US$5,000 fine in the US after inadvertently breaching a state's code of ethics involving a political reception. 

The drinks firm failed to report expenditures associated with a "welcoming reception" hosted for state officials during the 2012 Democratic National Convention in North Carolina, according to the Connecticut Post. Connecticut's Office of State Ethics announced the violation on Monday and Diageo has agreed to pay the fine, it was reported. 

In a statement to just-drinks, a Diageo spokesperson said: “We thought we were under the $10 threshold. When we learned otherwise after receiving an inquiry from the state, we remedied the issue by amending our report.

"At Diageo, we take compliance very seriously and we cooperated fully with investigators on this matter.”