Dale Cregan has been charged with the murders of PCs Fiona Bone and Nicola Hughes in Greater Manchester, police said.
The 29-year-old is also accused of killing father and son David and Mark Short, in separate incidents earlier this year.
In addition, Cregan faces three charges of attempted murder.
The deaths of PCs Nicola Hughes and Fiona Bone during a bogus burglary call in Hattersley, Greater Manchester, on Tuesday shocked the nation and has elicited an outpouring of sympathy across the country.
