Common problem throughout SE Asia - first encountered it in Hong Kong, last met it (often) in Brunei. Sultan's Flight aircraft had a kitestrike within 1 nm of the airport at BSB while I was there. On another occasion I landed within the airport boundary so my crewman could nip out for a "chat" with the kite-flier; he was one of the airport employees out for an afternoon's recreation(!). When we spotted his kite it was at 600 feet over the threshold. He seemed peeved when we suggested he might like to practice elsewhere.
Must ask John Eacott to host yet more pics...