"The man was treated in Wairoa Hospital for his wounds and then discharged."
Detective Sergeant Griffiths said a 22-year-old man was subsequently arrested and charged with firearms-related offences.
"He will make an initial appearance in the Gisborne District Court later today."
A second shooting happened just before 3am.
"There was a driveby shooting at the same house where the teenager was wounded.
"Shots were fired at the house, again with a shotgun. No one was injured," Griffiths said.
"We have also had reports of another driveby shooting outside another property in the town."
Wairoa police, supported by the AOS teams, searched a house in the town this morning.
"Two firearms in relation to these incidents have been recovered by police.
"Our operation relating to these incidents is ongoing."
*Anyone with information about these incidents should contact Wairoa police, or use the Crimestoppers number 0800 555 111.