Police have launched a murder investigation after an off-duty officer was killed and two others were injured

Constable Neil Doyle, 36, was attacked and killed while off-duty in Liverpool. The attack involved three men and occurred early Friday morning. No weapons were used, but it is unclear if the officers were recognized before the assault. The Merseyside police are appealing for witnesses and information to aid the investigation. Neil Doyle, a respected officer with 10 years of service, is remembered fondly by colleagues and the community. His recent marriage and future plans are now overshadowed by the tragedy. The investigation continues with hopes of public assistance and CCTV footage aiding in bringing the perpetrators to justice.

How did PC Doyle's colleagues describe him?

What impact did the death of Constable Neil Doyle have on his family and colleagues?