Much depends on how fast the investigation into the terrorist attack proceeds, economists say.

An investigation said numerous safety rules had been violated.

But the official investigation of Qingming's case said the teacher had not pressed the young student to pay his debts.

An investigation said the crash was unrelated to the design and construction of the system.

But the 20-month investigation "also found gaps between some of the announced reforms and the reality in the field," the report says.

The investigation also said the plant's design and structure were not at fault.

The prosecutor's investigation said the two had no criminal intent.

But the investigations could not say unambiguously why this trend was developing.

The investigation also said Khpalwak held a press identification card in his hand.

He did not say why the investigation took three years, but said it was an "intense, painstaking, careful" process.