A Boeing aircraft that was set to be delivered to an airline in China returned to the U.S. over the weekend, a sign of the emerging trade war between the world’s two biggest economies.

The Boeing 737 Max8 plane had been set to be delivered to Xiamen Airlines, according to CBS News senior transportation correspondent Kris Van Cleave. The plane, emblazoned with Xiamen’s blue-and-white logo, was photographed by a Reuters photographer upon landing on Saturday at Seattle’s Boeing Field.

Industry trade publication Air Current was the first to report about the return of the jet.