Officials said the government had been investigating the institute for at least three years.

Yet the government has been investigating the doctor for at least 18 months, interviews show.

While the government has investigated such reports, there were few convictions.

The government had investigated in 1951, but a new assessment was never completed.

And significant changes seem likely in the way the government investigates spy cases.

The Government then must investigate the validity of the allegations.

He also said that the government should investigate and address legitimate demands.

During the reporting period, the federal government investigated 48 trafficking cases.

In 1991, the federal government investigated the company for fraud and conspiracy.

The government must investigate this terrible attack as a matter of urgency.