Fort Worth police lost one of their K9 officers to an autoimmune disease Tuesday, the department wrote in a tweet.
The dog, 5-year-old Bak, had systemic lupus erythematosus, according to Forth Worth PD's Twitter account.
Bak was born on May 14, 2014 and served Fort Worth for about three years -- he became a K9 officer on April 14, 2016 -- police said.
Fort Worth police thanked Bak for his service, adding "we miss him already."
