The prosecution rested its case against Winnie Mandela with a final attempt to undermine her alibi that she was not in Soweto at the time of the alleged kidnapping and beating of four black youths in 1988.

Judge Michael Stegmann said closing arguments in the trial would begin May 6 regarding the charges against Winnie Mandela, wife of African National Congress Deputy President Nelson Mandela.Prosecutors introduced forensic evidence Tuesday to show several different inks were used to write a document allegedly proving she was absent from the black township of Soweto near Johannesburg the day after the alleged crimes.