The familial form cannot be excluded, however, without full investigation of other family members, which is not possible here.

Thus, many of the killings might go without full investigation or documentation.

I very nearly turned tail and fled without further investigation.

Without open investigation, we may never know the extent of election fraud.

An alienist, had one been present, would have made up his mind about him without further investigation.

The fifth door opened on a room which no woman could leave without further investigation.

Obviously, without proper investigation and systematic study they have done some work.

He also thought that without investigation, news would lose its energy, orientation and meaning.

However, it would be wrong to dismiss this line of thought without further investigation.

To my mind there is something very odd going on, when the basis of a report can be taken as read without thorough investigation.