Motorbikes and scooters worth tens of thousands of pounds have gone missing from across Barnsley in a crime-wave.
About 100 bikes are believed to have been stolen in the town since the beginning of December – some parked on streets and others taken from sheds and garages.
Officers are now cracking down on the thefts by targeting crime hotspots.
The work forms part of Operation Lockdown, which was launched by police to tackle burglary and vehicle crime following an increase in offending between April and August last year.
So far, more than 1,000 arrests have been made and officers have recovered £3 million worth of stolen goods.
Chief Inspector Andy Hodgkinson said: “We’ll be doing lots of proactive policing in the hardest-hit areas, so there will be officers out and about.
“But we also want the public to play their part by making sure that bikes are secured – even if they’re in an outbuilding.”
Overnight on Monday into Tuesday, two motorbikes were taken from a shed at St Michael’s Avenue, Monk Bretton, and another was stolen from Crown Street, Hoyland.
A mini-motorbike was taken from Burham Way and four pedal cycles and a scooter were taken from Rose Avenue, both in Darfield.
A mountain bike was reported stolen from St Anne’s Drive, Monk Bretton, and two mountain bikes went from Springfield Road, Hoyland.
Mr Hodgkinson said: “We want to hear from anyone with information about these or any other crimes.
“We’re especially keen to learn who’s handling these vehicles, where they are going and receiving any information that might lead to an arrest.”
n Call South Yorkshire Police on 101.