The White House has contacted China¡¯s Foreign Ministry over the detention of an American businesswoman accused of spying, a spokesman said on Tuesday, in a case that blew up just as President Xi Jinping began a visit to the United States.

Sandy Phan-Gillis of Houston, Texas, has been held by Chinese authorities for about six months under suspicion of spying and stealing state secrets, according to a statement from her family released this week.

White House spokesman Josh Earnest told reporters it was ¡°disconcerting¡± that many of the U.S. government¡¯s questions ¡°have gone unanswered¡± by Chinese officials about the status of Phan-Gillis.