"Police initially had information that there were concerns for a person's welfare near Kelston and a firearm may have been involved," Acting Area Commander for Waitematā West Inspector John Thornley says.
"Police located the subject of this report, a BB gun has been located and the matter has been referred to Youth Aid.
"Schools around the Kelston area went into lockdown as a precautionary measure given the nature of the report to ensure everyone's safety.
"We would like to acknowledge the cooperation of our schools and community while we carried out our inquiries in the Kelston area."
At the time of the incident, a short video clip posted on Facebook appeared to show an armed police officer walking on Archibald Rd.
On Tuesday, Kelston Girls College Principal Sarah Stenson told the Herald they ran drills often so they were able to swing into action quickly.
"People were calm and managed the whole situation really well. Training really pays off in these situations. I was proud of the way everyone responded."
Inspector Thornley says police have visited the affected schools and would continue to engage with them going forward.
Armed police flooded the West Auckland suburb after a firearm was reportedly discharged on Keegan Drive, Massey just before midday on Monday.
Members of the armed offenders squad responded and two people were taken into custody. There were no reports of injuries at the Massey property.
"Police are still working to ascertain the full set of circumstances of the earlier incident and these inquiries will be ongoing," police said in a statement.
About 2am another incident occurred outside a property on the same street. Police say initial indications show about eight shots were fired at parked vehicles.
No people were found at the property and there were no reports of injuries.