A 41-year-old Swede with a long criminal record pleaded not guilty Friday to killing Prime Minister Olof Palme in a case that has frustrated this orderly nation for nearly three years.

Christer Pettersson was arraigned at Stockholm District Court, and a judge ordered him held for further questioning. Press reports hailed his arrest Wednesday as a breakthrough in the investigation.Palme, a four-term prime minister who championed leftist causes, human rights and disarmament, was killed Feb. 28, 1986 while walking home unguarded from a late movie in downtown Stockholm with his wife.

The assassination shocked Sweden, which prides itself on its orderliness, tolerance and lack of political violence.

Join the Conversation
Looking for comments?
Find comments in their new home! Click the buttons at the top or within the article to view them — or use the button below for quick access.