An immigration fraudster would have received a $360-a-week sickness benefit despite being stripped of his New Zealand citizenship unless authorities were alerted to an "exceptionally small anomaly" in data-matching records.
The benefit for Salam Mansoor Abdelabbas Al-Bawi was stopped only after the Weekend Herald contacted Work and Income, which was unaware he was no longer a citizen.
Al-Bawi lost a High Court appeal in February against a ministerial decision to revoke his citizenship because it was obtained by "fraudulent conduct". He was overpaid $2500 in benefits. He is unable to return to New Zealand because he was overseas at the time of the court decision.
The Ministry of Social Development runs data-matching programmes with six other government departments, checking millions of records each year.
But Al-Bawi's benefit would have continued because the ministry does not match records with the Department of Internal Affairs or the Immigration Service for people whose right to live in New Zealand is revoked.