The following is what I came to know. I might be wrong.
Swearing on Quran is not part of Islamic teachings and can't be found in Quran and Hadith. Quran is to be read, recited and used as the Law and guidelines for Muslims, not to be used as any other tools including for swearing.
BTW, swearing in the Quran is thought by Surah An-Nur is swear 4 times by Allah's names, with the fifth by invoking the curse of Allah if they tell a lie. However, the surah is specifically states that this kind of swear is only when a husband is accusing his wife of adultery but can't find 4 witnesses, also used by the wife to defend herself.
^ Thanks for the information.
But I assumed that the legal systems in most Islamic country's will use the method of sworn evidence by the Quran, so it should apply in this case.