Eleven persons in Tripura tested positive for Covid-19 on Saturday, taking the state’s positive cases to 167.

However, the state government is yet to find the source of the virus.

Chief minister Biplab Kumar Deb, who also holds the health portfolio, tweeted, “625 samples have been tested for #COVID19 and among them 11 persons found #COVID19 POSITIVE. 7 people from 86-Bn BSF & 4 civilians from Churaibari Gate (2 drivers from other states, 2 people returned from Guwahati). All the POSITIVE patients are under proper medical care”.

The state now has 103 active cases while 64 patients have been discharged from hospital.

Law minister Ratan Lal Nath told the media in the evening that all the 11 new patients had been shifted to Saheed Bhagat Singh youth hostel, now a dedicated Covid care centre near here.

He said the seven BSF personnel who tested positive on Saturday had earlier tested negative. “On May 15, 10 BSF personnel of the 86th Battalion at the BSF headquarters in Ambassa in Dhalai district were found to have mild symptoms and when we took their samples, seven BSF personnel tested positive,” he said.

The maximum number of Covid-19 cases in the state has been found among the BSF personnel of 86th and 138th battalions in Ambassa subdivision.

Nath said among the four civilians who tested positive, two were truck drivers coming from Bengal with goods of ONGC Tripura asset. The other two are a 20-year-old girl from Teliamura subdivision in Khowai district and a 24-year-old man from Kamalpur in Dhalai district. They came from Guwahati and Tezpur in Assam.

“These four civilians, who came to the state on May 14, were put under home quarantine after collecting their samples,” Nath said.

A three-member team, led by Dr G.K. Medhi, professor and head of the community medicine department at NEIGRIHMS, Shillong, which is visiting the state to assist the state health department on Covid-19 management, went to Dhalai district on Saturday, Nath said.