DAR ES SALAAM - Men riding a motorbike threw acid at two British teenage girls in Tanzania's semi-autonomous Zanzibar region, leaving them with facial, chest and back injuries, a senior police official said on Thursday.
The pair, both 18 and from England's northern city of Manchester according to police in the Indian Ocean archipelago, were flown to Tanzania's commercial capital Dar es Salaam.
They had been volunteering at a local school in Zanzibar, an island that is popular with international tourists but has suffered a wave of deadly protests last year as supporters of an Islamist group repeatedly clashed with the police.
Britain is concerned about Wednesday's attack and is "in contact with the Tanzanian authorities", the Foreign Office said in a statement.
The police described the attack as "an isolated incident", refusing to link it to rising religious tension on the island between majority Muslims and its Christian population.