On 19 January 2007, Mr Walter Mandla Thusi (the deceased) was fatally shot at his office at the Engen Diesel Depot, Langlaagte, Johannesburg. Zola Cedric Machi (the appellant), a truck driver employed at the depot, was his co-worker and supervisor. The relationship between the appellant and deceased was strained due to the appellant's prior suspension from work, for which he blamed the deceased. Two State witnesses, Messrs Ntunja and Makholisa, employed at the Engen garage behind the depot, testified that on the evening in question at about 20h30, the appellant arrived at the garage in a Mercedes Benz with an unknown man wearing clothing resembling an Engen uniform. The unknown man walked towards the depot while the appellant entered the shop and bought airtime. He gave Mr Ntunja a R50 note to share with colleagues and allegedly told him someone was disturbing him at work. After buying petrol, the appellant drove towards Langlaagte police station, made a U-turn, and drove back slowly with hazard lights on, stopping near the depot. Five or six gunshots were heard from the depot direction. The unknown man was then seen running back from the depot and climbing into the appellant's motor vehicle, which drove away. The appellant denied being at the scene, raising an alibi defense that he was at home in Soweto with his girlfriend due to illness, supported by a medical certificate dated 19 January 2009.