Instead, investigators were trying to figure out whom the couple had let in.

He said that investigators were still trying to find out.

Investigators are still trying to determine how much money was involved.

Investigators are trying to determine the cause of the fire, the police said.

It could be that investigators, who live in the same culture, aren't trying hard enough.

But investigators, both then and now, have tried to track how he spent that time.

The police said that investigators had a first name for the man and were trying to track him down.

The investigators are still trying to determine where he went that day.

Investigators are still trying to gain a more complete financial picture of the four groups.

Investigators are now trying to determine where he got the sample.