He personally investigated the valley for decide how to conduct the expedition.

Gutheinz now plans to personally investigate both of these missing moon rocks.

Of course Halifax was going to investigate personally.

I think the engines were sabotaged, and I want to investigate personally.

This attack, beyond question, required that the Sheriff investigate personally.

The prosecutor only personally investigates cases when there are special crimes, such as corruption.

So I conceived that it was my duty, my responsibility, to personally investigate the allegations.

In order to clear himself, he investigates personally and brings the actual culprit to justice, sometimes using disguises.

You will personally investigate and verify that we have found no information about weapons in the libraries.

It sounded serious enough to cause him to investigate personally.