Baghdad, April 29 (IANS) At least 20 people were killed and some 30 wounded in Iraq's Diyala province Monday when a suicide bomber attacked the Kurdish civilians while celebrating sick Iraqi President Jalal Talabani casting his vote, a provincial police source said. The attack occurred in the city of Khanaqin, some 165 km from Baghdad. A suicide bomber blew up his explosive vest among a group of Kurdish people who gathered in front of the ****** of the Patriotic Union of Kurdistan party led by Talabani. The Kurdish people were celebrating while watching a video showing the Kurdish Iraqi president, who has been in Germany recovering from a stroke since the end of 2012, was casting his vote in early polls of Wednesday's nationwide parliamentary election.