Around 5.15am today (Thursday, August 3) cops were looking for a missing out on individual in a field off Higher Walton Road, Walton-le-Dale.
During the search an authorities dog ended up being aggressive, biting its cops dog handler, triggering major injuries.
Further patrols, consisting of armed officers, participated in the scene with efforts made to limit the dog.
All efforts to limit the dog stopped working and offered the continuing risk to the hurt officer and other patrols, PD Jax was contended the scene by armed officers, and regretfully passed away.
The cops dog handler suffered a major upper leg injury and stays in healthcare facility at this time.
No members of the general public were associated with the event.
Supt Hassan Khan, of Lancashire Police, said: “This is never an easy decision for any officer to take, but police have a duty to act where necessary before any further injury is caused, whether to officers, or members of the public. We would never put anyone at risk of further harm.
“These are highly trained, working dogs which do a skilled job, but like any dog can present a danger in certain circumstances.
“We know how much our dogs are loved by the people of Lancashire and beyond, as well as our own staff. We have been left devastated by what has happened and the outcome of this incident.
“Our thoughts are very much with the injured officer while she undergoes treatment for serious leg injuries and she is receiving our full support.
“Given the circumstances the incident will be reviewed in due course.”