FORT WORTH, Texas -- Authorities say an undercover police officer who was shot in the head when he and other officers disrupted a Fort Worth bar robbery has died.

Fort Worth Police Chief Joel Fitzgerald said during a news conference shortly after midnight that Officer Garrett Hull died Friday at JPS Hospital.

Fitzgerald said: "We've lost a true hero. Someone that dedicated more than one tour of service to this great city was senselessly killed by three known criminals, two of which are in custody now.''

Hull was shot early Friday by one of three suspects who were attempting to rob patrons of the bar.

Police say the suspect who shot Hull was then killed in an exchange of gunfire. Two other suspects fled the bar but were later apprehended.