Nikolai Grozev, mayor of Nova Zagora, sprinkled 50kg (110lb) of sugar on all four routes into the town, Bulgarian National Television reports . Mr Grozev says the idea was suggested by a local nursery school teacher. It comes after a week in which two policemen and two local youths were killed and five other people injured in crashes on the town's roads. "The town authorities followed the ancient tradition that sprinkling roads with sugar will banish evil omens," Mr Grozev tells the private bTV channel . "I got my housekeeper to buy the sugar, picked it up in an official car and sprinkled in the middle of the four approaches to Nova Zagora." But he added that it was primarily a symbolic gesture. "We just want people here and throughout Bulgaria to be more sensible and to drive carefully."