Police are calling it a "calculated" attack. The suspect is the father of a teenager who was shot and killed by an officer one day earlier.

A 14-year-old boy has been arrested and charged with murder in the death of a Newark police officer, after shots were exchanged between police and a group.

A convicted felon "executed" two Virginia police officers at point-blank range following a weekend traffic stop, authorities said.

A police officer was fatally shot while responding to a report of a person with a firearm inside a North Carolina supermarket, authorities said.

A police officer was fatally shot Sunday night while conducting a traffic stop in Terrell, Texas, police said.

Authorities say first responders were met by a hail of gunfire when they responded to a domestic call.

Police said Deputy Brandon Cunningham was killed after he and another deputy responded to a home after receiving reports of a domestic dispute.

Brandon Cunningham was a 30-year-old father of two.

Police in Lake County, Florida, said Monday they have arrested a woman over her alleged involvement in an "ambush" style shooting last Friday.

Two other deputies were wounded, in what authorities say was an ambush when they arrived to investigate a potential disturbance at a home.

Deputies were responding to a report of a disturbance when they were ambushed.

An Ohio police officer investigating a call of a disturbance at a home was fatally shot Saturday night in what authorities described as an "ambush."

Authorities are searching for Deshawn Anthony Vaughn, who is suspected of fatally shooting Officer Jacob Derbin, who was responding to a disturbance call in Euclid, Ohio.

Three Atlanta police officers were shot while responding to a call Saturday afternoon, officials said.

Authorities recovered an AR-15 rifle and .40-caliber handgun from the scene where four law enforcement officers were fatally shot in Charlotte, police said.

Law enforcement officers were trying to serve a warrant in a residential neighborhood in Charlotte, North Carolina, and were met with gunfire.

Police have issued an arrest warrant for a 22-year-old in connection with the shooting of the 30-year-old officer and have increased the reward for information leading to the arrest of the shooter.

Both deputies are in stable condition, but the suspect was killed.

The gunman was wanted for an attempted murder and armed robbery that occurred earlier in the week.

Police are searching for a suspect and a motive in the shooting death of an off-duty Chicago police officer. Authorities say the officer was gunned down as he headed home from his shift.

Police said the officer was in his uniform, but with a jacket over it at the time he was shot.

NYPD officer Jonathan Diller was gunned down earlier this week during a routine traffic stop in Queens. The three-year NYPD veteran leaves behind a wife and 1-year-old son.

Jaremy Smith is in custody after being shot and wounded during a shootout with police. Smith is a suspect in the fatal shooting of a New Mexico state trooper.

Officials have identified Jaremy Smith as a suspect in the murder of New Mexico trooper Justin Hare and was driving a car owned by a South Carolina woman found dead.

Officials have identified Jaremy Smith as a suspect in the murder of New Mexico trooper Justin Hare and was driving a car owned by a South Carolina woman found dead.

Minnesota Gov. Tim Walz said two police officers and 1 firefighter were killed Sunday in a suburb south of Minneapolis.

ABC News’ Alex Perez has the details as a Minnesota mourns the death of three first responders who were killed while responding to an alleged domestic dispute.

Burnsville officials hold a press conference after two Burnsville police officers and a firefighter-paramedic were killed in a shooting on Sunday.

Burnsville, Minneapolis, mourns the loss of two police officers and a firefighter killed in the line of duty after domestic violence call turned into a shooting.

Minnesota Department of Public Safety Bureau of Criminal Apprehension said more details to come once our preliminary investigation is complete.

A search is underway in Tennessee for a man suspected of shooting and killing a sheriff's deputy and injuring another during a traffic stop.

Officials are conducting an urgent search for the gunman who ambushed and fatally shot a county sheriff’s deputy in Los Angeles in an alleged targeted attack.

Police tracked suspect to a hotel room, and in the ensuing gun battle the 28-year-old was killed.

Two officers were injured on Friday in Orlando, Florida, after stopping a vehicle allegedly connected to a Miami homicide, police said.

The suspected gunman was killed in a shootout with SWAT officers at a hotel Saturday morning, officials said.

The suspect, who was fatally shot by police, was planning to kill more people at random.

Pennsylvania State Police have identified Trooper Jacques Rougeau and Lt. James Wagner as the troopers who were shot yesterday.

Officers

A North Carolina police officer and his wife were found shot to death in their home after he failed to show up to work on Friday, authorities said.

A North Carolina police officer and his wife were found shot to death in their home Friday after the officer didn't report to work, according to authorities.

An 18-year-old man was arrested Sunday for the fatal shooting of a Temple University police officer in north Philadelphia, authorities said.

The officer was shot and killed while trying to stop a carjacking on Saturday night in North Philadelphia.

A suspect is in custody after two police officers were shot while serving a search warrant in Newark, New Jersey.

The Oklahoma County Sheriff's Office said one of its deputies had died after being shot while serving an order.

A U.S. Marshal and a murder suspect were shot while law enforcement officials attempted to arrest the suspect in Peachtree City, Georgia, on Sunday.

Records show Roland Caballero was wanted in connection with an armed robbery.

A second NYPD officer has died after being shot in the line of duty.

The deputy did not have time to defend himself, a constable said.

One died, and the other is fighting for his life.

The officer is expected to make a full recovery.