An inquiry has been launched after what is thought to be human bones were found by a member of the public.
Police were called to an embankment close to Taplow railway station, between Maidenhead and Slough, at 1218 GMT on Wednesday.
It has not yet been confirmed by detectives whether the bones form part of a human skeleton.
The approach road to Taplow railway station has been closed at both ends to allow the scene to be examined.
Officers from Slough are now working with British Transport Police.