Sinn Féin Councillor Patricia Logue has warned residents in the greater Bishop Street area to be on the alert for lead thefts.
Its follows a number of thefts of lead from homes in Long Tower Court and Moore Walk in the early hours of Thursday morning.
People would find it hard to believe that when they are in their beds, that in the middle of the night there are people taking lead from their properties. But this is exactly what happened in the early hours of Thursday morning in Long Tower Court and Moore Walk.
This is just not opportunist small time thefts.
There have been a number of stories in the local press over the past few years regarding the theft of lead from homes, businesses and schools in the Derry area.
I would urge the PSNI to put in place whatever resources are available to apprehend whoever are behind these thefts, and if the community have any information on who is responsible they should bring it forward.
I would also urge scrap merchants in the Derry and Donegal area to be wary of people trying to sell off lead material quickly.