Jurors in Boston deliberated for a fourth day without reaching a verdict in the parental kidnapping trial of the man who calls himself Clark Rockefeller.

The jurors got the case Monday and will resume deliberations Friday.

They had asked a judge Wednesday if prosecutors had to prove that Rockefeller — whose real name is Christian Karl Gerhartsreiter — knew what he was doing was criminal or morally wrong. The judge told the panel the prosecution must prove both.

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Defense lawyers say Gerhartsreiter was delusional and legally insane when he fled to Baltimore with his 7-year-old daughter during a supervised visit.

Prosecutors call his insanity claim "preposterous" and say he is a con man who planned the kidnapping for months.

• Partial List of Witnesses at the 'Clark Rockefeller' Trial

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