So far this year, 13 law enforcement officers across the United States have died after they were shot in the line of duty.
Six of them died in just one week, said Craig Floyd with the National Law Enforcement Officers Memorial Fund.
The group recorded 12 firearms-related deaths in 2018 as of Tuesday, but an officer in Mobile, Alabama, was shot and killed late that night -- which would bring the grim toll to 13.
It's a big jump from the six recorded during the same period in 2017, according to data from the memorial fund.
One of the lawmen died in February due to complications from a gunshot wound he received in 1994.
"The tragic deaths... (are) a stark reminder of the dangers our law enforcement professionals face each and every day while protecting and serving our communities. Too often, their service and sacrifice are taken for granted," Floyd said in a statement earlier this month.
A Mobile police officer was shot and killed while responding to a call on the night of February 21, according to the department's police Chief Lawrence Battiste.
The officer, who has not yet been identified, was part of a team responding to a call of a woman found dead in a residential area. The officer was fired upon when attempting to speak with a person of interest, Battiste said.
The suspect is also dead, but Battiste said it was not immediately clear whether he was fatally shot by officers or had taken his own life.
Los Angeles County Sheriff's Deputy Steven Belanger
Although he was shot in the head more than 23 years ago, Belanger, 52, died February 6 due to complications from that injury. He was shot by a man on a skateboard as he conducted a traffic stop in Rowland Heights, according to the Los Angeles Times.
The suspect committed suicide later the same day.
Adams County Sheriff's Deputy Heath Gumm
Gumm and other deputies were chasing a man while investigating a report of an assault on the night of January 24 in Thornton, a city near Denver.
When the deputies followed the man behind a home, the man pulled out a handgun and fired, hitting Gumm in the chest, a sheriff's spokeswoman said.
Gumm, 31, died of the wound. The alleged shooter was taken into custody, officials said.
El Paso County Sheriff's Deputy Micah Flick
Flick was marking his 11th anniversary as a sheriff's deputy with El Paso County when he and some colleagues were looking into a report of a vehicle theft on February 5.
Flick, 34, was shot and killed -- and three other law enforcement officers were shot and injured -- during a struggle with a suspect in Colorado Springs, authorities say.
The suspect died, police said.
Locust Grove Police Officer Chase Maddox
Maddox, 26, was killed February 9 when he tried to assist two Henry County Sheriff's deputies in arresting a man wanted on a warrant for failure to appear in court.
The shooting occurred in Locust Grove, a small town about 35 miles south of Atlanta, authorities said. The two deputies were wounded and the suspect was killed.
Chicago Police Commander Paul Bauer
Bauer, 53, was killed on February 13 while responding to a call in downtown Chicago. He went after a suspect who had an altercation with other officers and escaped, police said. Bauer, a 31-year veteran, encountered that individual and was shot several times.
A suspect was taken into custody.
Detroit Police Officer Glenn Doss Jr.
Doss, 25, was shot in the head on January 24 as he got out of his patrol car to respond to a domestic violence call. He died four days later.
The alleged shooter barricaded himself inside of a home for about four hours. A SWAT team deployed chemical agents in the home and took a man into custody.
Westerville Police Officers Eric Joering and Anthony Morelli
The two were fatally shot February 10 as they responded to a to a 911 hangup call involving potential domestic abuse, authorities said.
Joering, 39, and Morelli, 54, were shot as they entered an apartment in Westerville, north of Columbus, Division of Police Chief Joe Morbitzer said.
The suspect, Quentin Lamar Smith, was hospitalized and taken into custody, police spokeswoman Christa Dickey said. He faces two counts of aggravated murder.
Deputy US Marshal Christopher Hill
Hill, 45, was shot and killed January 18 in Harrisburg during an attempt to serve an arrest warrant.
He was with other members of the Middle Pennsylvania Fugitive Task Force.
As the officers were attempting to apprehend a woman at a home who was wanted for making terroristic threats, a man inside opened fire. Hill and two other officers were struck. One of the officers shot and killed the shooter.
York County Sheriff's Detective Michael Doty
Doty, 37, died on January 17 of gunshot wounds he received one day earlier during the search for a man who shot a York County Sheriff's canine handler.
The handler was ambushed by the man, who was accused of attacking his wife.
A SWAT team that included Doty responded to the incident, and the suspect shot the detective.
Richardson Police Officer David Sherrard
Sherrard, 37, was shot and killed on February 7 when he responded with other officers to a shots fired call at an apartment complex in Richardson.
When they arrived, police found a person suffering from a gunshot wound. While some officers provided first aid to that individual, who later died, an investigation led others to a nearby apartment.
Upon entry to the apartment, the suspect began firing on the officers, striking Sherrard.
The gunman was later arrested, authorities said.
Pierce County Sheriff's Deputy Daniel A. McCartney
McCartney, 34, was shot and killed as he chased two burglary suspects after responding to a home invasion call January 7 in Frederickson.
Authorities say McCartney was able to fire his weapon as well. One of the suspects was found dead at the scene, and the other was apprehended later.
™ & © 2018 Cable News Network, Inc., a Time Warner Company. All rights reserved.