Chinese police have confiscated more than 112 million fake invoices so far this year, 20 percent more than the total for the whole of last year.

"Police dealt with a total of 2,386 cases in the last five months and arrested 3,686 people, cleaned out 1,227 criminal premises and broke up 207 gangs, said Public Security Ministry spokesman Liu Dong at a news conference Tuesday.

Police also closed 179 websites that were linked to invoice crimes, Liu said.

The police began a crackdown on fake invoices, commonly used to avoid tax payments, in January and it is expected to run till October with the support of the Finance Ministry, the State Administration of Taxation and the National Audit Office.