Moscow has threatened to imprison people for up to five years who do not quarantine themselves for at least two weeks after traveling back from countries hardest hit by the coronavirus.

The city government announced its “high alert regime” on Thursday and implemented extra regulations in an effort to combat the spread of the disease in the Russian capital, according to Reuters. Moscow said people traveling from China, France, Germany, Iran, Italy, South Korea, Spain, and other countries with “unfavorable” signs of the illness must quarantine themselves.