 Meanwhile, a number of armed police guards were stationed at the hospital, and staff were made to work in pairs when administering medication to patients.On 20 July 2011, GMP confirmed that they had arrested a 27-year-old female nurse – Rebecca Jane Leighton, who worked at the hospital on ward A1 and A3 – in connection with the murder inquiry.The Nursing and Midwifery Council opened a fitness to practice investigation after the arrest of Leighton.