PRETORIA: At least 20 shops possibly belonging to immigrants were looted in South Africa's capital overnight, police said on Tuesday, but they could not confirm if the attacks had deliberately targeted foreigners. Anti-immigrant violence has flared sporadically in South Africa against a background of near-record unemployment, with foreigners being accused of taking jobs from locals and getting involved in crime. Responding to similar incidents in Pretoria at the weekend, Nigeria's foreign ministry said it would summon South Africa's envoy to raise its concerns over "xenophobic attacks" on Nigerians, other Africans and Pakistanis. - Reuters