Insurgents in Baghdad have car bombed two Iraqi army targets, killing at least 11 soldiers and wounding 28 other people.

Police say the first attack Wednesday was at an Iraqi army base, and killed at least seven soldiers. A second car bomb exploded at an army checkpoint, killing four more soldiers.

Abu Musab al-Zarqawi's terrorist network claimed responsibility for the first attack in an unauthenticated Internet message.

The attacks follow the killings Tuesday of a Kurdish judge, Barwize Merwani, and his lawyer son, Aryan Merwani, who both worked for the Iraqi Special Tribunal that is trying Saddam Hussein and his closest aides. A relative said the two men were gunned down as they left the judge's home in northern Baghdad.

It was not immediately clear whether their killings were linked to their work on the tribunal. But on Monday the tribunal said it had enough evidence to begin proceedings against five defendants, including one of Saddam's half-brothers.

And a Swedish-Iraqi politician, Minas al-Youssifi, who was kidnapped in January, has made a second video appeal to Sweden's king and Pope John Paul II to help win his release, saying he fears his death is imminent.

Some information for this report provided by AP, AFP and Reuters.