It was gathered that the incident occurred at 10 Koppe, Middleburg, Mpumalanga, South Africa, on July 6.
Witnesses said an unknown man made a way into the compound of Mr Ozumba Tochukwu-Lawrence and requested to see him.
A witness who spoke on condition of anonymity said Ozumba on being told about his guest, he came out to meet him, and the man opened fire on him and shot him six times, resulting in his death before he could reach the hospital.
The Consul-General of Nigeria in South Africa who spoke on the killings via a statement by the Vice Consul Information and Culture, David Abraham, on Sunday in Abuja.
Abraham said the Consul General received with pain the unfortunate news of the assassination of Tochukwu-Lawrence by a yet to be identified assailant.
He said: “The reason behind the sad incident is yet to be established, but this is very unfortunate and condemnable.”
He said that the Consulate commiserated with the deceased’s family and indeed, the entire Nigerian community in South Africa.
The Consulate, he said, was also calling on the South African relevant authorities to unravel the mystery behind this dastardly act.
“Efforts should be made by the Police and other relevant agencies to apprehend the assailant and bring him to justice.
“We also call on our nationals to cooperate with the police and judicial officers in their investigation and prosecution.
“The Nigerian Consulate will continue to advance the welfare and security of Nigerians in South Africa.
“We also call on our citizens to remain calm and eschew violence, as we seek to obtain justice for the deceased and members of his family,” he said.
Before the latest one, there was the assassination of ThankGod Okoro, who was reportedly shot dead in Hamburg, Florida West Rand, in Johannesburg on April 9, 2018 by the South African Police Flying Squad.
There was also the killing of Clement Nwaogu in April, a father of two, who was burnt to death by his assailant.
These wanton killings of Nigerians in South Africa had sparked a number of protests.
Also for demanding justice on behalf of their fallen compatriots, 14 of the protesters were taken into custody and branded drug peddlers.