Cylinder-shaped UFO over Berlin

On May 2014, a long cylinder-shaped UFO is appeared above the city of Berlin, Germany. This blue object has five little lights on his top. What is it?

Witness reports:

Hey I just took a time-lapse movie 2 weeks ago and was kind of confused as I took a closer look at the pictures! On 5 of them is this thing, maybe your group is interested in it. Let me know what you think this could be ?