Noticed my car makes an odd noise when I start it, only does it when it's cold, is fine when warm.

The starter turns and the engine fires up fine, but when you let go of the key the starter makes almost like a high pitched metallic screech, I guess you could relate it to finger nails down a black board. Only does it for a split second as starter disengages.

Any idea what it could be? Starter on its way out or flywheel ring gear knackered

Cheers

Rich