Complex sentence: In September 1855, the Christchurch resident magistrate investigated Mckenzie's case and found serious flaws in the police inquiry and trial and secured an unconditional pardon on 11 January 1856 after spending only nine months in prison.
Split into simpler sentences: In September 1855, the Christchurch resident magistrate investigated Mckenzie's case and found serious flaws in the police inquiry and trial. Mckenzie was given an unconditional pardon on 11 January 1856 after spending only nine months in prison.