ATHENS, Oct 2, 2008 (AFP) - Archaeologists in Greece have found Roman remains in a submerged ancient port on the Cycladic island of Kythnos, the Greek culture ministry said on Thursday.

The archaeologists found the bearded head of a man and the torso of a warrior wearing a Roman-era breastplate at a depth of 2.5 metres (eight feet) underwater in the island bay of Mandraki last month.

It is unclear whether the fragments were part of the same statue.

They had apparently been used as building materials in a wall running along the harbour, the ministry said in a statement.

The age of the fragments has not been certified.

The Romans became dominant on the Greek mainland from the 2nd century BCE onwards after defeating the waning Macedonian kingdom and a number of Greek city-states in battle.

Greece was subsequently incorporated into the Roman Empire for the next 500 years.