ATHENS — Three cabinet ministers in Greece have been placed in precautionary quarantine after a meeting with a business executive who later tested positive for the coronavrus.

The ministers of development and shipping Adonis Georgiadis and Giannis Plakiotakis say they would remain at home until tested. An alternate minister for development, Nikos Papathanassis, also was in precautionary quarantine.

The development ministry says the ministers had attended an investors’ meeting and the visiting business executive who tested positive had traveled from overseas.

Meanwhile, government officials say they are pressing ahead with plans to build detention facilities for migrants on Greek islands after a Somali man tested positive for the coronavirus at the country’s largest refugee camp on the island of Lesbos.

The Health Ministry is expected to carry out mass testing at the camp over the next few days.