British lawmaker Jo Cox, who was killed on Thursday, had previously contacted police after receiving “malicious communications” and they had arrested a man in connection with the investigation in March.
Police said that the man they had arrested at that time was not the 52-year-old man who was being held in custody in West Yorkshire following his arrest close to the crime scene.
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“Officers received an allegation of malicious communications from Jo Cox MP, and in March 2016 arrested a man in connection with the investigation. The man subsequently accepted a police caution,” police said.
Cox, a 41-lawmaker for the opposition Labour Party and a vocal advocate of Britain’s European Union membership, died after she was shot and stabbed repeatedly by a man who witnesses said shouted “Britain first.” Both sides in Britain’s EU referendum suspended campaigning after the attack.