Election monitors for the Organization for Security and Cooperation in Europe are doing their job in the Ukrainian presidential elections unobstructed and without incident, according to the monitoring mission's spokesman Tomas Reimer.

He told Interfax-Ukraine on Sunday evening that no information was available to him about any problems or incidents.

Reports said earlier that some of the OSCE's monitors left Ukraine's eastern regions for security reasons and given that some of the polling stations did not work in Donetsk and Luhansk regions.

The international election monitoring mission is comprised of more than 1,200 observers from 47 countries, including over 1,000 long-term and short-term observers representing the OSCE's Office for Democratic Institutions and Human Rights, 116 parliamentary representatives and delegates of the OSCE Parliamentary Assembly, 46 representatives of the Parliamentary Assembly of the Council of Europe, 18 members of the NATO Parliamentary Assembly and 14 members of the European Parliament.

The OSCE mission is to release a report on May 26.