BEIJING, March 16 (Xinhua) -- The COVID-19 patient who returned to Beijing from the United States last week is being investigated for the suspected crime of impairing the prevention and control of infectious diseases, a Beijing police spokesperson said Monday.

The 37-year-old female patient, surnamed Li, is a citizen of the southwestern city of Chongqing but has been living in Massachusetts, according to Pan Xuhong, deputy head and spokesperson of the municipal public security bureau.

Li, who developed symptoms including fever and cough on March 1, flew back to Beijing with her husband and son from Los Angeles and arrived at Beijing Capital International Airport on March 13. They were sent to a hospital directly from the airport and Li tested positive of the COVID-19.

Li is being treated at a designated hospital. Her husband and son are under quarantine, according to Pan.

Pan said the Beijing police will resolutely crack down on the illegal acts of refusing to cooperate in epidemic prevention and control, such as falsifying information and concealment of illness, and bring those accountable to justice.