Serbia and Bosnia and Herzegovina have reported a death toll of at least 20 in the worst floods in the region in more than a century.

Serbia's Interior Ministry confirmed there had been at least 15 deaths in Serbia and another five in neighboring Bosnia-Herzegovina but unconfirmed reports put the numbers even higher, at over 30.

Over 20 000 people were evacuated from their homes in the past few days due to the flooding, according to reports of local authorities.

The evacuation operations are still underway, the city of Obrenovac being among the worst hit, with 90% of the city territory under water.

Serbian Prime Minister Aleksandar Vucic announced at a press conference that the situation in the country was difficult but assured that the authorities were prepared for the next wave of floods.

The western city of Sabac, which is near the Sava River, expects more rising waters Sunday evening, according to CNN.

Heavy rains are expected Sunday in Sremska Mitrovica and Belgrade.

Several centers for accommodating flood victims have been set up in Belgrade.

Serbia has received financial and humanitarian aid from the EU (EULEX), the US, Russia, Montenegro, Macedonia, Bulgaria, Croatia, Slovenia, Hungary, France, Germany, Austria, and the Czech Republic. A number of countries also sent teams of rescue workers to help the flood-hit areas.