It kept flashing white.I was just returning home after playing in the evening with my friends when I saw it. At first, I thought that it was a star, but when I looked carefully at it, I noticed that it was moving. But still I ignored because I thought that it was an aeroplane as where I live, many planes fly over my apartment’s buildings. I kept walking. There was no one around and even some of the street lights weren't lit, it was quite dark. Then, I just suddenly heard a loud sound like something flew right behind me. So I looked back and saw that the object had come a little near from its earlier position and was flying in circles and some kind of pattern like it first went vertically down at great speed (almost like it was floating) and then, it flew in a semi-circle upwards from left and then from right and it kept doing this for some time. I felt very strange, I can’t describe the feeling. It was a strange feeling watching it; I just couldn't take my eyes off it. After stopping for a few seconds, it emitted a flash and just disappeared. I hadn't shared this info with anyone since then, not even my parents or my family. I thought they would think that I've started having hallucinations or I've gone mentally sick and also I wasn't sure what I had just experienced and seen. I haven’t seen that thing since then.