"We do not know with any certainty how long the baby has been there or how it has died and while I understand there will be concern in the community I want to reassure residents that we will be working hard to answer these questions.
"If anyone has any information whatsoever, regardless of how insignificant you think it might be, please get in touch.
"We are obviously deeply concerned for the welfare of the mother and if anyone has seen someone in the area or has any information about who you think the mother might be please call us."
More top news
Staying windy and unsettled
David Cameron has admitted the General Election is on a "knife-edge" as he tried to woo voters with the promise of a "truly seven-day" NHS.
Two murderers who wed in Britain's first gay prison marriage will not be allowed to share a cell.