The 50-year-old man was found alone and lifeless in a delivery van. Masondo said the motive for the killing was unknown and no arrest had been made.
He said the police could not figure out why the man had stopped on the side of the road in what appeared to be a work vehicle.
In the first incident‚ a man died after being shot eight times near the Glenhove offramp on the M1 North highway just after 5pm on Wednesday.