The fresh round of excavation, which began late January, is being led by archaeologist Swarnkar. This is the third season of excavation at the 16th century Purana Qila, after excavations in 2013-14 and 2017-18.

Painted grey wares or PGWs were found in the first round of excavation in 2013-14, Swarnkar said.

The artefacts have been unearthed as a result of multiple rounds of excavations, which date from pre-Mauryan era to Mughal period, Swarnkar said.1

Union Culture Minister G Kishan Reddy visited the excavation site on Tuesday morning and said the government considers it as an "important archaeological site".

He also said efforts will be made to expedite the excavation work before the onset of the monsoon.

Swarnkar said the Purana Qila is among the "possible sites" in Delhi which will be visited by delegates during the G20 Summit slated to be held in New Delhi in September.

Asked what artefacts have been excavated in the last one month or so, he said a "brick platform" and a "kiln" of the Kushana period were found at the site.

Officials in January had said archaeologists were all set to carry out a fresh round of excavation at Purana Qila with an aim to expose and preserve the trenches that were excavated in previous such exercises.

A fresh trench has also been dug at the excavation site, Swarnkar said.

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Identified as ancient settlement of Indraprastha, a continuous habitation of 2,500 years at Purana Qila was established in earlier excavations, it said.2

ASI spokesperson Swarnkar said in the first round of excavation at the Purana Qila site, "a ring well, beads and sealings" from the Mauryan era was found, adding that some of the artefacts carry "symbols from that era" but no text, so one cannot ascertain who was Mauryan ruler.

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• 1. "In the latest excavation at Purana Qila site, artefacts from Kushana period, Rajput period and Mughal period have been found, among other antique remains. These include a spoked copper wheel about 5 cm in diameter (Kushana period), a copper arrow head (Rajput period), a bone needle and a pint (Gupta period) and old coins (Mughal period)," Swarnkar told PTI.
• 2. "The findings and artefacts unearthed in earlier excavations comprise painted grey ware, belonging to 900 BC, an earthen pottery sequence from Maurya to Shunga, Kushana, Gupta, Rajput, Sultanates and Mughal periods," the ministry had said.