Prime Minister Jacinda Ardern has announced there will be reform of gun laws.

She says Cabinet has made "in principal" decisions about the changes, and there will be change within 10 days.

She did not say what those changes would be, but said media would be told within a week.

A total of 50 victims have been confirmed dead after Friday's terror attack on two Christchurch mosques, with the dead ranging in age from 2 to older than 60

Many more were wounded, with 33 still in hospital.

Ardern says there will also be an inquiry, to find out what government agencies knew, or should have known, and whether the attack could have been prevented.

It will focus on the GCSB, SIS, police, and customs.

NZers have also come together to prove the terror attacks will not divide the country.