All 20 Korean tourists, quarantined upon arrival in China for flu-like symptoms on Tuesday, have been released.

The nation’s consulate in Shenyang said the Chinese authorities quarantined a 50-year-old feverish South Korean man and 19 passengers in his vicinity at the airport on Tuesday.

They were held in isolation at a hotel in Shenyang for testing for H1N1 influenza.

They were released Wednesday afternoon after displaying no concrete signs of the virus.