In a court of law, they'd be considered insufficient evidence.

However, the case was later closed due to insufficient evidence.

But he was never brought to trial due to insufficient evidence.

In both cases, they found that there was insufficient evidence to support their claim.

There is clearly insufficient evidence for the most serious charges.

The case was closed in 1950, on the grounds of insufficient evidence.

In such cases there may be insufficient evidence for the use of police powers.

But the editorial said there was insufficient evidence to support that.

There was little to do but to discharge him for insufficient evidence.

Results show that there is insufficient evidence to make a reliable decision.