Three managers at the hospital of convicted baby killer Lucy Letby have been arrested on suspicion of gross negligence manslaughter in relation to the deaths.

Ms Letby, 35, was found guilty of seven murders and eight attempted murders across 2015 and 2016 while working as a neonatal nurse at the UK’s Countess of Chester Hospital.

Several hospital doctors have claimed that hospital bosses ignored their concerns about Ms Letby, who they noticed was present around the times of several unusual deaths.

In 2023, police started investigating possible corporate manslaughter — a British concept meaning a company or managers can be liable for negligent management leading to death — that later expanded to include possible gross negligent manslaughter.