animal rights organisation peta had also last week filed a petition with the national green tribunal demanding an immediate ban on use of the string . the incident , a police officer said . animal rights organisation peta had also last week filed a petition with the national green tribunal demanding an immediate ban on use of the string ahead of independence day on august 15 . saanchi goyal , 3 , and harry , 4 , were looking out through the sunroof of their cars in different parts of delhi when sharp strings slit their throats . image copyright getty images image caption kite - flying is a popular sport in many parts of india three people , including two children , have died after their throats were slit by glass - coated strings used for flying kites on india 's independence day . the delhi government has now banned the use of sharpened manja to fly kites and promised to run campaigns to animal rights organisation peta had also last week filed a petition with the national green tribunal demanding an immediate ban on use of the string . a day after two people , including a three year old girl , died after getting entangled in the ‘ maanjha ’ ( sharp string used for flying kites ) , the delhi government on monday banned chinese ‘ maanjha ’ in the capital . these strings also kill and maim hundreds of birds annually - at least 500 birds have been admitted to the charity birds hospital in delhi in the past three days alone , indian media reports say . but every year , there are reports of people dying or getting wounded from the kite strings - locally known as manja - treated with powdered glass or metal to sharpen them .