Deputy Prime Minister Nick Clegg's joined warnings against any knee-jerk calls to arm all police, following the death of two officers in Manchester.

Detectives are continuing to question 29 year old Dale Cregan about the killings of Fiona Bone and Nicola Hughes yesterday - and two other murders.

Meanwhile, officers from the Greater Manchester force have held a minute's silence for their colleagues - and a special service has taken place at a local church.