Red lights on top of police car?

[MarkRSi]

Today I was following a police car which had red lights flashing rather than the usual blues. I was just curious what these would be for? (I wasn't tailgating them or anything )

We parted ways at a roundabout, however shortly after the same police car shot past us with all usual blues going, cool story bro but might that have something to do with the earlier red lights flashing?

[MarkRSi]

Couldn't tell if the red lights were visible from the front as I was following them, but they were definitely moving with the lights going.