Police said the man, who is in his 40s and is part of the Parliamentary and Diplomatic Protection Command, was being questioned over suspected kidnap and murder.
Two sites in Kent were being searched on Wednesday as the hunt for the missing 33-year-old continued - one of which is believed to be the suspect's home.Marketing executive Ms Everard vanished while walking home from a friend's flat in south London on Wednesday March 3.Late on Tuesday, the Met Police said a serving officer from the force had been arrested as part of the investigation, but in an unusual step would not reveal what he had been detained for.On Wednesday, the force said he had been initially arrested on suspicion of kidnap, and later murder.He is also being questioned.
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