Complex sentence: There had been a fourfold increase in local burglaries between January and May 2007, including two in the McCanns' block in the 17 days before the disappearance, during which burglars had entered through windows.
Split into simpler sentences: There had been a fourfold increase in burglaries in the area between January and May 2007. These included two in the McCanns' block in the 17 days before the disappearance, during which burglars had entered through windows.