They weren't really based on any firm evidence at all.

Officials think most if not all of them are dead, but need firm evidence to close the cases.

"But how close do you think he is to getting firm evidence?"

Some human rights groups, without firm evidence, believe that the numbers are much higher.

It may have been used for communications but there is no firm evidence.

There is no firm evidence for a castle on the site.

In reply to a question, however, he said his office has no firm evidence that anyone else was involved.

However, there is no firm evidence to support this assertion.

There has been no firm evidence for modern humans in Europe before about 35,000 years ago.

There is no firm evidence that a significantly larger number of people have started taking the drug in recent months.

Nor is there any firm evidence that the 1996 Presidential race was affected.

There is no firm evidence yet that the Fed has actually elected to cut interest rates.

There is, for the moment, little firm evidence for such a political change.

The investigation turned up some odd stories but could not gather any firm evidence.

Until now they've had no firm evidence to go on.'

Firm evidence for specific early performances of the play is scant.

Of course, my mind could be changed should you prevent firmer evidence to back up your theory.

I wouldn't say that, although I don't have firm evidence to support it.

He said there should be very firm evidence of a systematic problem before a new bureaucracy is established.

Several local residents are said to have caught a glimpse of him but there is no firm evidence to support this claim.

However, firm evidence for both his marriage and any offspring is unavailable.

No firm evidence, but someone Slade was instructed to keep his eye on.

Yet there is very little firm evidence that there any significant violence in this period.

No firm evidence has appeared to support reports the sect was trafficking in arms.

A survey in 1998 produced no firm evidence from hunters or fieldwork.