Serbia has no confirmed cases of coronavirus yet, but on Tuesday a WhatsApp voice message began doing the rounds on social media claiming several people had already died from the virus in the capital, Belgrade.
"Doctors are strictly forbidden to talk about the virus," the woman is heard saying on the message, which was published on several Serbian news portals.
Facebook chief executive Mark Zuckerberg had a "good, constructive meeting" with US President Donald Trump at the White House yesterday, the company quoted by the DPA.
A Facebook spokesman said in an email that Zuckerberg is in Washington for meetings with politicians discussing future regulations on the Internet.
Kosovo Police arrested two person on Wednesday suspected to be the creators of the Radar group on Viber, used by thousands of citizens to avoid the police controls and speeding fines across the country.
A group of more than 7,000 people joined a group over the past months whose members sent updates to each other about the location of the police in real time.