By The Associated Press

A drug-sniffing dog that authorities say was left unattended in a hot Department of Public Safety squad car for more than an hour in Tucson has been euthanized.

A DPS spokesman says the Belgian Malinois was euthanized Thursday.

The dog was left unattended at DPS headquarters in Tucson on Wednesday after an officer was switching from one patrol car to another and was called away on an emergency.