In the 1580s came another spate of plots against the regime, centred on Mary, Queen of Scots. Henry Percy, 8th Earl of Northumberland was arrested in the aftermath of the Throckmorton Plot of 1583 on suspicion of complicity but later released. After contacting the French ambassador, he was rearrested and imprisoned in the Tower of London, where he was found dead in his cell on 21 June 1585. Three days later a commission of inquiry in the form of a meeting of peers in the Star Chamber. Bromley announced that Northumberland had committed suicide after participating in a conspiracy, although suspicions remained that he had been murdered.