Bureaucrats have been accused of increasing the fire risk on Lantau from burning incense during Sunday's Ching Ming Festival. The Green Lantau Association has been refused permission to put up 40 fire warning signs because of a government ban on all but election banners. For the past five years the association has put up warning signs in vulnerable areas such as cemeteries before the festival, when hundreds of thousands of people burn incense at ancestors' graves. Association spokesman Fabian Pedrazzini said: 'It's quite ridiculous and unacceptable that there is a rule drawn up by bureaucrats in an air-conditioned office in Hong Kong without any thought to what happens on the ground. 'These signs do not conflict with election purposes. We are not a political group. We were the line of defence against fires and now we're prevented from doing anything.' The Fire Services Department blamed burning incense for several of the 68 blazes that swept hillsides last Sunday. Department officers will patrol grave sites on Sunday.