An American destroyer has reportedly fired live rounds at the northern Polish coast while disposed of the combat-ready mode it had assumed during joint naval drills.

The 250-crew guided-missile destroyer, USS Ramage, fired three shots at the port city of Gdynia, said spokesman for the Polish Military Gendarmerie, Marcin Wiacek, 'Russia Today' reported on Wednesday.

Crewmembers and locals were being questioned on the incident which, according to preliminary data, caused no human or material losses.

The warship had just partaken in the joint naval exercises with the Polish Navy and was at the dock to 'give its crew time for rest.'

"We will use this time to exchange experiences and hold meetings of experts," spokesman for the 3rd Flotilla of the Polish Navy, Grzegorz Lyko was quoted as saying by the Xinhua news agency.

The American officials have not commented on the matter.

Russia has questioned the alleged intentions behind the visits, which mainly target Poland and Georgia.

HN/MB