explosive or other lethal device

with reference to sections 5 and 13, means-

a)an explosive or incendiary weapon or device which is designed or manufactured, or has the capability, to cause death, serious bodily injury or material damage;
b)a weapon or device which is designed or manufactured, or has the capability, to cause death, serious bodily injury or material damage through the release, dissemination or impact of toxic chemicals, biological agents or toxins or similar substances or radiation or radioactive material; or
c)any weapon of mass destruction, as defined in section 1 of the Non-Proliferation of Weapons of Mass Destruction Act, 1993 (Act 87 of 1993);