4 yellow lights followed by single red light just behind (stable lights)

It was around 8pm . I was outside the house watching sky and I noticed a weird looking craft( formation) travelling from East to North West, it has formation of 2 yellow stable lights at front , 2 yellow stable lights at side and just behind of front lights there was a 1 stable red light, it had humming sound as aeroplane, it was flying at slightly lower altitude, there is a airport near us so I have seen many aeroplanes flying at that altitude , but the size of this formation was double the size of aeroplane flying at that altitude, I tried to take photos and videos but somehow my phone camera wasn't able to capture it .my camera was working fine before and after that incident but at that time when the craft was passing by my camera system somehow glitched.