Manchester shootings: Police warn of continued threat after deaths of two policewomen The Chief Constable of Greater Manchester Police has warned that officers and others remain under threat following a gun and grenade attack which claimed the lives of two female police officers on Tuesday. Sir Peter Fahy said police could not be sure that all explosive devices had be recovered from the area. Pcs Nicola Hughes and Fiona Bone were attacked on the Hattersley estate, Tameside, during a 'routine' burglary call. Pc Bone died at the scene of the attack and Pc Hughes died later in hospital. Sir Peter has warned of the continued threat resulting from the feud between gangs in the area following the shooting. He advised that the force had issued a number of notices, known as Osman warnings, to people believed to be at risk of being murdered or seriously injured. Sir Peter said yesterday: "We are not confident that we have recovered all the grenades, we don't know for certain, so we've made it clear to our officers that the threat is still there. I would want that to be the message, this has been a long-standing criminal feud between different outfits in Manchester and in the Tameside area, and that threat is very much there. Shortly after the attacks on Tuesday one of the country's most wanted men, Dale Cregan, handed himself in to police. Cregan, 29, was wanted for questioning in connection with the deaths of father and son David and Mark Short. A 28-year-old man man was also arrested yesterday in the Hattersley area on suspicion of conspiracy to murder. Yesterday Pc Bone's family issued a statement in conjunction with her partner Clare. The statement said that she died doing the job she loved and "was planning her marriage to Clare and this joy has been taken from us." The family of Pc Hughes, who lived in Oldham, also issued a statement. Her mother Susan, father Bryn and younger brother Sam said: "Nicola was our only daughter and a beautiful child. Few details have emerged of the incident, but police said that that one of the officers' Tasers was found on the ground out of its holster at the scene of shooting. Eyewitnesses claim to have seen a hail of bullets, followed by a large explosion thought to be a grenade. The deaths have reignited the debate over whether or not police should be armed, with Nick Clegg and Theresa May ruling out routinely arming police. May, who met with Manchester police chiefs yesterday, described the killings as "savage acts of pure brutality," and hailed the bravery of the two officers. Thousands of tributes have already poured in for the fallen officers, including from the Queen, and the force held a minute silence in their memory at 11am yesterday, almost precisely 24 hours after the attack.