Sources said though transfers are effected once in three years, K Amarnath Ramakrishna has been transferred to ASI headquarters prematurely.
More sites in other parts of the state have also been identified to find deposits from early Iron Age, chalcolithic age and also trace history of early Odisha from Kharavela period to 6th century CE.
The digging work this time, ASI (Puri circle head) Dibishida Gadnayak said, is aimed at tracing the link between Odisha and Southeast Asian countries.
Minister Thangam Thennarasu and joint director of the state archeology department R Sivanantham supervised the excavation.
The department dug up 14 trenches, where the officials traced a weighing unit made of crystal quartz, a snake figurine made of terracotta, and other artefacts.
Over 35 workers continuously worked to remove the silt and drained the water from the tank with three motors working round the clock.
The civic body has already identified as many as 78 sites where cellar excavation is going on, but officials expect the number to rise as the circle-wise inspections are still going on.
It may be noted that apart from brick structures, excavation at the site since May this year has unearthed items like hopscotch, spout, glass bangle, beads and rubbing stone.
The harbour is protected by the arms of Dumanagiri hills which run from east to west, Jhinkarradi hills in the northwest and the estuary of Rushikulya river in the south.
The district administration also set up an exhibition stall at the excavation site so that the public can see the unearthed antiquities.
Union culture minister G Kishan Reddy on Tuesday said the Purana Quila is identified as a site related to the ancient city of Indraprastha as antiquities of that era had been found here.