The confession was obtained through duress and coercion.
duress and pressure
Frequency:
55
%
He succumbed to the duress and pressure of the situation.
under great duress
Frequency:
40
%
She performed under great duress.
duress and threat
Frequency:
30
%
The witness gave false testimony under duress and threat.
Idiomatic Expressions for duress
Phrase: under the duress of
Meaning: under the pressure or stress of a particular situation
Usage: She made the confession under the duress of interrogation.