A fourth person has been arrested in connection with the death of Syrian-born preacher Abdul Hadi Arwani who was shot dead in Wembley.
The 36-year-old man was arrested by detectives on Friday on suspicion of conspiracy to murder and has since been bailed.
Mr Arwani was a critic of the Assad regime in Syria and an imam at the An Noor mosque in Acton, west London, from 2005 to 2011.
He was found dead in a car with gunshot wounds in Greenhill, at the junction of The Paddocks, on April 7.
One man, Leslie Cooper, 36, of Nightingale Road, Harlesden, has appeared in court charged with Mr Arwani’s murder.
He was remanded in custody to re-appear at the court on April 28.
A 61-year-old man was arrested on Tuesday on suspicion of conspiracy to murder and further arrested on Wednesday on suspicion of the commission, preparation and instigation of acts of terrorism.
A 53-year-old woman was arrested on Wednesday on suspicion of the commission, preparation and instigation of acts of terrorism.
Both remain in police custody.
Detectives from the Met’s Counter Terrorism Command continue to investigate.
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