The turnout is just slightly higher than in the first election round, but significantly lower than in the 2000 presidential vote, when one-quarter of voters had voted by 11 am.
The highest turnout of almost 19 percent was reported in Varazdin County, and the lowest turnout of 11 percent in Zadar County.
The highest turnout was reported in Varazdin (around 24 percent), while the lowest (10 percent) was reported in Dubrovnik.
The turnout in the capital Zagreb was around 17 percent.
The second election round, which will determine Croatia's president for the next five years, is proceeding in a peaceful and tolerant atmosphere, Crnic said.
All of more than 6,500 polling stations in the country were opened on time, except for a polling station in Split, which was opened with a seven-minute delay.
This is one of the five reports received by the Interior Ministry.
The police also reported the theft of state flags at two polling stations, a scuffle between two voters, and a disgruntled voter who filled in his ballot paper wrongly and could not obtain another one.
Crnic said that most inquiries by citizens referred to the location of polling stations and that there was a lot of inquiries by persons who were unable to go to the polls for health reasons.
He recalled that the DIP had called on all voter committees to help disabled people and others who are unable to reach polling stations, however, he added that this would depend on how busy members of voter committees were.
The DIP member in charge of out-of-country voting, Branko Hrvatin, said that DIP representatives monitoring elections in Bosnia-Herzegovina had reported long queues at polling stations in the neighbouring country, but no irregularities.
There are no reports about the turnout in Bosnia-Herzegovina because the DIP had not requested such information from voter committees in Bosnia, Hrvatin said, confirming that the DIP had been informed about voters from Herzegovina being taken by bus to polling stations in Croatia.
The DIP contacted representatives of the election monitoring association GONG and the OSCE in Mostar, but they were unable to confirm such reports, Hrvatin said.