First observed by ((name deleted)) security guard about 03.00 hovering in clouds of Mt.Egmont, later was observed by other ((deleted)) guard (early morning 05.30) formation of red and blue (non standard for aircraft) lights approx 10, shape was partially hidden in clouds from the car, car was stopped and driver left the car for better visual contact. Visibility was good. Estimation of distance from ground was about 200-300m, estimated size 2x rugby field. Ship was gliding soundlessly into the ocean in western direction.City was "dead" this day time, no vehicles or people on the street.Colour - metallic grey. No source of power was observed. No windows were observed.