China says finds no clues to explain U.S. sonic incident

BEIJING (Reuters) - China has found no clues to explain what happened to an American citizen working at a U.S. consulate who reported suffering from “abnormal” sounds and pressure leading to a mild brain injury, a foreign ministry spokesman said on Thursday.

The U.S. embassy, which issued a health alert on Wednesday to Americans living in China, said it could not link the case to health problems suffered by U.S. government staff in Cuba dating back to late 2016.

Foreign Ministry spokesman Lu Kang said China has always safeguarded the security of foreign organizations and personnel of foreign countries, including the United States, according to the Vienna convention.

“China has already conducted an earnest investigation and we have also given initial feedback to the U.S. side,” Lu told a daily news briefing in Beijing.

“Currently, we have not found any reasons or clues leading to the situation described by the United States,” he said.

In Washington on Wednesday, U.S. Secretary of State Mike Pompeo said the United States was concerned about the “serious medical incident” and raised it with China’s visiting State Councillor Wang Yi.

The unnamed U.S. citizen assigned to the consulate in the southern city of Guangzhou had reported various “physical symptoms” dating from late 2017 to April this year, the U.S. embassy in Beijing said in an email.

The worker was sent to the United States for further evaluation. “The clinical findings of this evaluation matched mild traumatic brain injury (MTBI),” the embassy said.