Police have arrested five people in areas across West Yorkshire, Wiltshire and north Wales as part of a counter-terrorism operation. The “pre-planned” arrests were part of an investigation into far-right terrorism led by Counter Terrorism Policing North East, police said. Two men, aged 29 and 30, and a 28-year-old woman were arrested at an address in Keighley on suspicion of being involved in the commission, preparation or instigation of acts of terrorism under section 41 of the Terrorism Act 2000. A 16-year-old boy in Swindon and a 28-year-old man in Anglesey were also arrested on suspicion of the same offence. An ordnance-disposal unit was alerted after officers discovered suspicious material at one of the addresses in Keighley, West Yorkshire police said in a statement. The unit will provide specialist advice and organise the safe removal of the items if required. Some residents have been evacuated while the material is examined and a cordon has been put in place around the site. Multiple properties are being searched in connection with the arrests. The five suspects are being questioned at a police station in West Yorkshire. A spokesperson for West Yorkshire police said: “We recognise that local people may have concerns as a result of this activity. We would like to reassure them that these arrests are pre-planned and intelligence-led and there is not believed to be any immediate risk to the local community.”