Baltimore police officer Sean Suiter died Thursday after being shot in the head while on duty the day before, authorities announced. Suiter, a homicide detective, was an 18-year veteran of the police force, according to the Baltimore Sun.

Suiter, 42, was shot Wednesday in the Harlem Park neighborhood of West Baltimore, where he was investigating another homicide. He was taken to a nearby hospital and was pronounced dead the next day.The person who shot him remained at large, while local and federal authorities continued the hunt for the suspect Thursday. A $69,000 reward was offered for any information leading to the suspect's arrest.

“We will find the person responsible for this ridiculous, absurd, unnecessary loss of life,” said Police Commissioner Kevin Davis. “We are absolutely certain that the community will step up again to bring this heartless, ruthless, soulless killer to justice.”

Suiter was survived by his wife and five children, according to WBAL.

“His tragic death will forever impact the BPD,” Davis wrote in an email to the department. “Each of you go out there and put your lives on the line every single day. The importance of your sacrifice, and Sean’s, can’t be overstated.”

The Federal Bureau of Investigation also weighed in on Suiter’s death.

“Today, FBI Baltimore joins the Baltimore Police Department in mourning the loss of Detective Sean Suiter,” Gordon B. Johnson wrote in a statement Thursday. “We extend our deepest condolences to the family of Detective Suiter, Baltimore Police Commissioner Kevin Davis and the entire Baltimore Police Department. Our thoughts and prayers are with Detective Suiter, his family, friends and colleagues.”