Zimbabwe on Saturday freed three apartheid-era spies who were serving life sentences for a politically inspired murder.Zimbabwean nationals Kevin Woods, Michael Smith and Philip Conjwayo were convicted in 1988 in a car bombing targeting exiled members of South Africa’s now governing African National Congress. The explosives detonated before reaching their target in Bulawayo, killing the Zimbabwean hired to deliver them. President Robert Mugabe pardoned the three men on humanitarian grounds. Conjwayo suffers from cancer and his two alleged accomplices also have health problems, according to their lawyers.