American Airlines is investigating whether US climate envoy John Kerry broke the rules and took off his mask on a recent flight.
According to the Tennessee Star, which first reported the story, Mr Kerry was photographed without a mask as he sat first-class on a flight between Boston and Washington.
“Masks are required on board our aircraft,” American Airlines said in a statement to The Independent. “Our team works diligently to make sure customers are wearing masks properly as they travel with us, and flight attendants pass through the cabin several times during flight to ensure compliance. The crew did not observe Secretary Kerry without a mask, and they were not alerted by other customers to a non-compliance issue. We continue to review the matter and we are reaching out to Secretary Kerry to underscore that all customers are expected to wear masks for the duration of their trip.”
The envoy said on Twitter on Wednesday if the mask slipped, it was only briefly.