A fuel tanker exploded in Tanzania on Saturday, killing 57 people and injuring 65, many of whom were siphoning petrol from the vehicle, which had crashed according to state broadcaster TBC Taifa.The explosion occurred around 200 km (120 miles) west of the capital Dar es Salaam."We have been saddened by reports of an accident involving a fuel truck in Morogoro, which caught fire and burnt several people," government spokesman Hassan Abbasi said on Twitter.