Who Dunnit? Logic Puzzle

In the tiny suburb of Green Field, Pennsylvania, a crime was committed. The adept police quickly narrowed down the suspects to these nine. During the interrogations, the suspects answered as follows:

Albert

Edmond is guilty.

Bruce

It was not Edmond

Connor

I did it.

Davey

It was either Connor or Horace.

Edmond

Bruce isn't telling the truth.

Forest

Connor is guilty.

Gunther

It was not Connor

Horace

It was neither Connor nor I.

Ian

Horace is telling the truth. And it wasn't Edmond, either.

But only three of the suspects are telling the truth. Six are lying. Who committed the crime?

From Technology Review

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