UFO Sighting in Iași, Județul Iași on February 25th 2016 – Pointed camera aimed and shots a few times, only one photo appeared with blue light

1. I was with my friend at Palas Mall Iasi Romania taking night photos of Palas Mall using my Samsung S4 mobile phone. 2. I thought I saw a bright whitish shining object moving in a zig zag manner over my camera screen, so I decided to take a few more shots of the same spots. 3. I thought it could be an UFO. 4. It moves over the camera screen in a zig zag manner at high speed and disappeared suddenly. 5. I am not sure what I saw was for real. 6. I don't know. All I knew was of the few photos taken of the same direction of the sky, only one of the photos have a blue disc with white light above the building.