Polish electoral commission website hacked, but unrelated to glitch delaying election results

A woman casts her ballot during the first round of Polish local elections, in Warsaw, Poland, Sunday, Nov. 16, 2014. The voting is considered a test for the main parties ahead of the parliamentary elections next year. Some 30 million voters are eligible to choose nearly 47,000 councilors and 2,500 local administration leaders on Sunday, but observers are concerned about the possibility of a low turnout. Opinion polls gave a narrow lead to the governing pro-business Civic Platform party, over the nationalist opposition Law and Justice. (AP Photo/Czarek Sokolowski) (The Associated Press)

Officials in Poland say computer hackers have attacked the website of the country's electoral commission, which is still unable to publish full returns from local elections because of an unrelated computer glitch.

The State Electoral Commission says while the website hacking incident didn't add further difficulties to the vote counting process, it ordered its officials to change their passwords Wednesday.

But the problems have undermined the credibility of Sunday's vote, which has been seen as a test of strength for new Prime Minister Ewa Kopacz before next year's general election.

Exit polls suggested a win for the opposition Law and Justice party in provincial assemblies, but the official returns for the assemblies were still unknown Wednesday, after the computer system failed, forcing a count by hand in some places.