In Russia, the prosecutor general's office officially closed the investigation in mid-December after a two-year inquiry.

The two-year inquiry by the Commons trade and industry select committee found civil servants kept vital information from ministers.

In January 2007, the European Commission issued the results of a two-year inquiry into the retail banking sector.

He also said that 231 products had been removed from the market during the two-year inquiry.

Since late 2011 the Office of the Children's Commissioner has been making a two-year inquiry into child sexual exploitation by street gangs.

They followed a two-year inquiry that began with an investigation of possible financial irregularities at the mission, which moved to Houston in 1975.

Investigators who took part in a two-year inquiry said the amount of money involved in the reported scheme could exceed $30 million.

Mr. Paisley's telephone has been tapped and his consulting office bugged during much of the two-year inquiry.

Indeed, the latest report, based on a two-year inquiry, catalogued a new and potentially more chilling problem.

They said the ruling was based on a two-year inquiry and voluminous documents that showed the church was qualified for the exemptions.