A motorist was arrested by gardaí for travelling at 187km/h in a 100km/h zone.
The official Garda Traffic account on Twitter said: "Naas Roads Policing Unit operating speed checks on the M4 in north Kildare recently detected a car at a speed of 187km/h in a 100 zone.
"Driver (was) arrested for dangerous driving and brought to Leixlip Garda Station and charged."
The account added that the driver will appear in court soon.
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