Police have made a third arrest in the investigation into an attempted arson attack at Finchley Reform Synagogue in north London.A 19-year-old man was detained at an address in Portsmouth on Thursday morning and remains in custody, according to the Met Police.Officers were called to the synagogue on Fallow Court Avenue, Finchley, in the early hours of 15 April.No damage was caused to the building and no one was injured.The arrest follows earlier detentions in Watford on the day of the attack, when a 38-year-old woman and a 46-year-old man were arrested on suspicion of arson with intent to endanger... [Continue Reading]