President Muhammadu Buhari is expected to pay a state visit to South Africa in October, the South African presidency said on Saturday.

Buhari’s visit to South Africa is coming after a spate of xenophobic attacks on foreign nationals in Johannesburg which caused tensions between the country and Nigeria.

South Africa’s financial capital and surrounding areas were rocked by a surge of deadly attacks against foreigners this week, many directed against Nigerian-owned businesses and properties.

The violence prompted reprisal attacks against South African firms in Nigeria and the temporary closure of South Africa’s embassies in Lagos and Abuja.

South African police say at least 10 people were killed in the violence and hundreds of shops destroyed.

Buhari’s visit is meant to “reinforce the strong bonds between the two countries and jointly develop responses to challenges affecting people and businesses in South Africa and Nigeria,” said South Africa’s presidency in a statement.

Foreign workers are often victims of anti-immigrant sentiment in South Africa — the continent’s second-biggest economy after Nigeria — where they compete against locals for jobs, particularly in low-skilled industries.

More than 420 people have been arrested since the violence flared up on Sunday.