Christchurch police are investigating after houses were shot up on four different occasions over the weekend.
It's believed the incidents are connected and one of the houses was mistakenly targeted.
"Police were called to properties on Hammond Place, Spreydon, and Gayhurst Road, Dallington, about 10:30pm on Friday; and Hammond Place, Spreydon, and Broadbent Street, Riccarton, yesterday between 10:30 and 11pm," police said in a statement.
There were no injuries in any of the incidents.
"We would like to send a clear message to the people responsible for this behaviour - we won't tolerate this level of violence in our communities," Detective Senior Sergeant Damon Wells said.
"We are committed to finding these offenders and holding them to account by putting them before the courts."
Anyone with information about any of the four incidents is urged to get in touch by calling 105 and quoting file number 221210/6364.
You can also share information anonymously through Crime Stoppers on 0800 555 111.