Purple UFO caught in New Zealand

On September 3, 2017, a witness saw a weird purple UFO somewhere in New Zealand. What is it?

Witness report:

pic takin with my IR camera in the early hrs. dont know what it is . but pic shows what might be a UFO ..[ blue].. next to it . can someone please tell me what this is . if thats a UFO next to it .. [in blue]..the ufo might be 10 mtrs across . then it roughly shows the size of it .