(Yicai Global) June 14 -- Shanghai reported one more imported novel coronavirus case yesterday, taking the eastern metropolis' total confirmed Covid-19 cases to 691, the city's health commission said this morning.

The new addition is a Chinese citizen who had been working in Mexico and traveled back to Shanghai on May 31, according to the commission.

All the close contacts with the patient at the same flight had been placed under quarantine, the commission said.

The commission logged no new confirmed domestically transmitted cases yesterday. It also reported no asymptomatic cases under observation in the city the same day.

Among the confirmed 350 imported Covid-19 cases so far, 18 patients are being treated and 332 have been discharged upon recovery, the commission said.

It added two suspected cases, also involving people who had recently been overseas, are undergoing further tests.

Of the 341 local cases, seven have died and 334 patients have fully recovered and been released from hospital, the commission said.