"A third incident occurred at a separate property where shots were also fired into the address."
Wairoa Police, supported by members of the Armed Offenders Squad, searched a property in the town on Monday morning.
Traffic was blocked on State Highway 2, Mahia Avenue between Freyberg Street and Kiwi Road while Police conducted the search.
"I want to reassure the community that Police enquiries are ongoing and extra resources have been bought into Wairoa to support local staff" Griffiths said.
Anyone with information about these incidents should contact Wairoa Police, or anonymously via Crimestoppers on 0800 555 111.