A drunken man who was arrested in Manchester demanded an interpreter after telling police he would only speak in Welsh. Officers spent four hours trying to find a Welsh language expert to deal with the man, 26, who could speak perfectly good English.
But they failed to find a translator and had to let him go without charge.
Officers went onto Twitter to blast the "difficult and time-wasting" prisoner who was arrested at 2am for a public order offence in Sackville Street, Manchester.
Their official tweet said: "Drunk and disorderly - despite speaking English in custody, insisted on Welsh interpreter which we struggled to find.
"And no, it's not a dig at the Welsh, just frustration and feeling that someone was being difficult needlessly."
The un-named man was bailed to return to the police station when sober and he accepted an £80 fixed penalty fine - written in English.