BALTIMORE – A Baltimore homicide detective is in “grave condition” after he was shot in the head on Wednesday, launching an all out search for the “cold, callous killer.”

The unidentified police detective, an 18-year veteran of the force, was shot around 4:30 p.m. by a man who approached him while engaging in “suspicious behavior,” according to Fox 45 Baltimore. The shooting happened in a troubled area of Baltimore that is struggling with high crime rates.

At the moment, the officer is on life support in the intensive care unit. Little is known about the man in critical condition, but Police Commissioner Kevin Davis said he has a wife and two children. Federal agencies were offering a $60,000 reward for information leading to the gunman’s arrest.

“We are doing everything we can to keep [the officer] stabilized and to take care of the injury to his brain,” said Dr. Thomas Scalea, chief of the University of Maryland Medical Center’s Shock Trauma Center.

Davis said the officer was “just doing his job” when he was ambushed and vowed to have the shooter captured.

“This is a dangerous profession. This is a dangerous job. Police officers know that at any given time they could confront someone who wants to do them harm, and that’s exactly what happened tonight,” Davis said. “With this community, we’re going to identify him, we’re going to arrest him, and we’re going to ensure justice is done.”

Baltimore police department tweeted earlier Wednesday: “Please say an extra prayer for the officer and the officer’s family.”

A tactical unit combed the streets of West Baltimore as they remained cordoned off while fellow officers searched for the homicidal gunman.

As a result, countless police units responded and a department helicopter buzzed overhead, illuminating streets below with a searchlight. The neighborhood where the officer was shot has a number of vacant row houses and has been the scene of numerous shootings over the years, according to Fox.

Wednesday’s shooting comes amid a particularly violent period in Baltimore: So far this year, the city of less than 620,000 inhabitants has seen more than 300 homicides. Baltimore Mayor Catherine Pugh called for an end in the gun violence at a news conference, saying “enough is enough.”

“We are praying for peace in our streets. And I can say to you all again and again: Enough is enough. Crime has to come to an end in this city. This kind of violence cannot be tolerated,” she said.

The Bureau of Alcohol, Tobacco, Firearms and Explosives’ Baltimore field division, the FBI’s Baltimore field office and the DEA’s Baltimore district office are offering a reward of up to $60,000 for information leading to the arrest of the gunman.

Anyone with a tip can call the department at 410-396-2100 or text 443-902-4824.

(Photo: Screenshot of video @PaulGessler Twitter)

UPDATE: The gravely wounded detective has been identified as Sean Suiter. We are sad to report that Detective Suiter has passed away.