The Nigerian, Kingsley Ikeri, a 27-year-old living in South Africa’s eastern Kwazulu-Natal province, had been allegedly “suffocated to death by the South African police on the allegation that he was involved in drug trafficking,” the Nigerian foreign ministry said in a statement.

 Ikeri is reported to have died on August 30.

The Nigerian foreign ministry in a statement on Tuesday said it has summoned the South African Acting High Commissioner to Nigeria, Kenneth Pedro, to protest the what it termed extra-judicial killing.

The ministry said the Under-Secretary for Regions and International Organisations, Ifeoma Akabogu-Chinwuba had expressed Nigeria’s anger at the alleged killing to the South African envoy.

She urged South African authorities to bring those “responsible for the despicable acts” to justice.

The statement read: “She further informed Mr. Pedro that while the Federal Government of Nigeria would not condone illegal or anti-social acts or criminalities, it behoves the South African government to ensure that every resident accused of any offence is presumed innocent until proven guilty through the judicial process.”

The alleged extra-judicial killing is the latest source of diplomatic tension between the two continental powerhouses.

In February, Nigeria summoned South Africa’s ambassador over a fresh wave of immigrant violence that left dozens of shops owned by Nigerians vandalised in Johannesburg and Pretoria.