Two police dogs have died in a hot vehicle parked outside the headquarters of Nottinghamshire Police.
An RSPCA officer was called to the Sherwood Lodge headquarters in Arnold on Tuesday and found two German shepherd dogs dead.
An independent vet is carrying out post-mortem tests to establish how the animals died.
The incident has been voluntarily referred to the Independent Police Complaints Commission (IPCC).
'Swiftly reported'
Nottinghamshire's Assistant Chief Constable, Peter Davies, said: "This is a tragic incident and we value the important work our police dogs carry out on a daily basis.
"That is why we swiftly reported this incident to the RSPCA and we will be working with them very closely."
In a statement Nottinghamshire Police said the welfare of all animals owned by them was, "of paramount importance and we endeavour to take every measure possible to ensure their well-being and safety".
The force refused to say what kind of vehicle was involved.
Nottinghamshire vet Andrew Wilson said: "The dehydration would have been a big factor.
"They wouldn't be able to cool themselves because panting wouldn't be effective any more, there would be no evaporation from the tongue.
"As the core temperature rose as a result of that, and the brain temperature rose, the brain would cease to function and various other organs would fail. This happens certainly within 30 minutes".
An RSPCA officer was called to the Sherwood Lodge headquarters in Arnold on Tuesday and found two German shepherd dogs dead.
An independent vet is carrying out post-mortem tests to establish how the animals died.
The incident has been voluntarily referred to the Independent Police Complaints Commission (IPCC).
'Swiftly reported'
Nottinghamshire's Assistant Chief Constable, Peter Davies, said: "This is a tragic incident and we value the important work our police dogs carry out on a daily basis.
"That is why we swiftly reported this incident to the RSPCA and we will be working with them very closely."
In a statement Nottinghamshire Police said the welfare of all animals owned by them was, "of paramount importance and we endeavour to take every measure possible to ensure their well-being and safety".
The force refused to say what kind of vehicle was involved.
Nottinghamshire vet Andrew Wilson said: "The dehydration would have been a big factor.
"They wouldn't be able to cool themselves because panting wouldn't be effective any more, there would be no evaporation from the tongue.
"As the core temperature rose as a result of that, and the brain temperature rose, the brain would cease to function and various other organs would fail. This happens certainly within 30 minutes".