All four men are British nationals and have been detained on suspicion of plotting acts of terrorism, say police Four men have been arrested on suspicion of plotting acts of terrorism in raids in Yorkshire, Derbyshire and the West Midlands. Counter Terrorism Policing North East (CTPNE) said a 33-year-old man had been arrested in Leeds, a 31-year-old man in Huddersfield, a 34-year-old man in Derby and a 49-year-old man in West Bromwich.