Zanzibar: Acid thrown on two British women volunteer teachers

Zanzibar, Tanzania (CNN) -- Two British women were injured in an acid attack carried out by two men on a motorcycle on the east African island of Zanzibar, local police said Thursday.

The women, who were attacked in Stone Town, the island's historic center, had been working as volunteer teachers on the island, travel firm i-to-i Travel said.

Stone Town is a UNESCO World Heritage Site popular with tourists.

The attack occurred Wednesday night as the women were walking unaccompanied along a street, said police commander Muccadam Khamis.

The attackers, who did not take anything from their victims, left the scene on the motorbike, he said.

The women were taken to a local medical center for first aid treatment, he added.

British consular officials then helped them reach the city of Dar es Salaam, on the Tanzanian mainland, where they received hospital treatment, he said.