A building that collapsed² during last year's Christchurch earthquake was sub-standard, an official report has found.

新西兰一份官方报告显示，去年克莱斯特彻奇地震中倒塌的一座建筑质量不合格。

A total of 115 people died when the CTV building collapsed in the earthquake
The six-story Canterbury Television (CTV) building did not meet requirements when it was built in 1986, said a report by the Department of Building and Housing.

Its collapse¹ killed 115 people - almost two-thirds of those who died.

The death toll³ for the magnitude 6.3 quake on 22 February 2011 has also been revised from 181 to 185.

The coroner's office in New Zealand's second-largest city said more deaths had been recorded following reviews.

The building report found that load-bearing concrete columns of the CTV building were not sufficiently⁴ reinforced with steel. The department also said that the building fell well short of current minimum standards.

Earthquake Recovery Minister Gerry Brownlee said the report raised "serious questions about the structural⁵ integrity（结构完整性） of the building".

"We note the report has now been passed onto the New Zealand Police to look into further," he said.

The head of the engineering firm that designed the building called the report ''technically⁶ inadequate⁷''.

"Some of the assumptions made in the reports are highly questionable," Alan Reay Consultants⁸ Ltd (ARCL) said in a statement.

A memorial service will be held in Christchurch to mark the first anniversary of the disaster.