A Russian national has become the second man to plead guilty to importing 5kg of MDMA into New Zealand.

Three people were arrested at Christchurch Airport when the powdered substance was found in a Samsonite suitcase.

At the time of the arrest in April last year, the drugs had a street value of $2 million.

Vadim Shkolnitski, 35, appeared in Christchurch District Court today.

He was convicted of importing the Class B drug, otherwise known as ecstasy.

Vladmir Turovsky, 33, pleaded guilty earlier this month.

Charges have been dropped against a third person, 31-year-old Ganna Manchenko, a Ukrainian national.

Shkolnitski and Turovsky, both Russian, will appear for sentencing on February 28.