Monmouth Assembly Member Nick Ramsay has been suspended from the Welsh Conservative party after being arrested.
The 44-year-old was arrested at his home on Wednesday night.
The party was informed on Thursday morning and Mr Ramsay was suspended from the Welsh assembly Conservative group.
A party spokesman confirmed there was a police incident at the Monmouth AM's home on Wednesday night.
A Welsh Conservative spokesman said: "Nick Ramsay has been suspended from the Welsh Conservative Group in the National Assembly for Wales following an incident which took place yesterday.
"The suspension will be reviewed following consideration of the matter by external agencies.
"We will not be making any further comments at this time."
Mother who held woman captive as a slave for 25 years jailed
Council appoints contractor to begin delivery of Hereford Bypass
Culture bids ‘must benefit county regardless of outcome’
Hereford pensioner despairs of Blue Badge renewal
Eight-figure sum quoted to fix Ledbury station access
Road patched over 200 times ‘still dangerous’
Herefordshire households to pay £20 more for police and fire
Pegasus FC cruise to huge win over Worcester Raiders in the Uhlsport Hellenic League Marsh Challenge Cup Semi Final