Boeing Co shares started this week with a sharp negative, falling more than 6% after confirmed reports of a Boeing 737 crash in China.

This information was spread by the Aviation Safety Network on Twitter, among others:

“We are following multiple unconfirmed reports of a possible crash of a Boeing 737-89P (B-1791) of China Eastern Airlines Flight No. MU5735 en route from Kunming to Guangzhou, China.”