Black diamond-shaped UFO over Haleiwa, USA

On March 20, 2018, a tourist caught a picture of a black UFO over Haleiwa, Hawaii with his LGV20 phone.

Witness statement:

While on vacation as a normal tourist I was taking pictures, I noticed this mountain in Halewia, Oahu with an unusal cloud hovering around it. Thinking it to be beautiful I took 3 pictures in succession. However, I was unaware I had captured this object until reviewing the photos when we retuned back to the beach house. It did not appear in the first photo but the last two photos.

Source, 30 mars 2018