Detective Inspector Greg Murton says enquiries by Christchurch CIB supported by forensic experts into these and other residential red zone arsons and burglaries are continuing and additional charges against other identified offenders are likely.
"These charges are the result of excellent forensic work at the scene of these arsons and burglaries followed up with a focused team of detectives investigating these offences," he said.
"This will continue for all arsons and burglaries in residential red zone."
Police have increased patrols in the hard-hit areas and have asked that any suspicious activity is reported to them immediately.