EXTRA police patrols are being carried out in Intake and Gleadless Valley after a spate of pipe thefts – causing gas leaks.
The incidents were reported around the neighbourhoods on Thursday night.
Inspector Jason Booth, of Woodhouse and Mosborough Safer Neighbourhood Team, warned of potentially-deadly consequences.
He said: “What may start out as criminal damage or stealing metal piping may actually result in an explosion causing serious injury or worse if leaking gas ignites.
“We will be increasing patrols in the area and ask the public to be vigilant.”