他出于被迫在供状上签了字。

He signed the confession under duress.

元代以后，指模才被用于狱词供状。

The fingerprint was used as the written confession in prison after Tang.

最高法院驳回供状，宣布他的谋杀罪判决无效。

The Supreme Court threw out the confession and voided his conviction for murder.