A probe has been ordered against a private laboratory after a number of flyers who reached here from Italy recently tested positive for Covid-19 amid allegations by several of them that their test reports were incorrect, health officials said.

The Airports Authority of India has also replaced the services of the Delhi-based laboratory with a local lab, officials said. The probe had been ordered after several of the passengers who returned from Italy had alleged that their Covid-19 positive report was not correct as they had tested negative hours before boarding the flight. They had raised questions on the testing practice adopted by the lab. Many among them had even created ruckus at the international airport here.