Czech President Milos Zeman says his country and the entire European Union should help Bulgaria guard its border with Turkey in efforts to stop migrants.
Bulgaria is an EU member but is not part of the EU visa-free Schengen zone. Some refugees have traveled through its territory on their way to rich western European states.
The influx of refugees to Greece and also Bulgaria was significantly reduced after a recent deal between Turkey and the EU.
After meeting his Bulgarian counterpart, Rosen Plevneliev, on Monday, Zeman said details of the Czech deployment in Bulgaria are already being worked out.
The Czechs sent 50 police officers to Hungary to help guard the border with Serbia on Monday and previously also deployed dozens of officers in Greece, Slovenia and Macedonia.