Wisconsin has a number of firearm-related laws in effect that limit access to children and individuals with a history of violence.

Police are investigating the online footprint of the 15-year-old girl who allegedly opened fire at her Madison, Wisconsin, Christian school.

Gunfire erupted in Towson, Maryland, on Tuesday evening, leaving 1 person dead and 9 others wounded, according to police.

A 15-year-old girl allegedly opened fire with a handgun at Abundant Life Christian School in Madison, Wisconsin, killing a teacher and a fellow student.

The shooting happened inside a classroom at Abundant Life Christian School during a study hall of students from multiple grades, police said.

Community members in Wisconsin are continuing to wrestle with grief and calling for change in the aftermath of a school shooting that killed a teacher and a student and wounded six others

The shooter was a 15-year-old student, officials said on Monday. Natalie Rupnow, who went by Samantha, died of an apparent self-inflicted gunshot wound.

A teacher and teenage student were killed and six others hurt in a shooting at Abundant Life Christian School in Madison, Wisconsin, on Monday, police said.

The teenage girl alleged to have shot seven victims, two fatally, in an attack on Monday at a Wisconsin school marks the rare occurrence of a female school shooter.

A man was inside the apartment and was arrested and charged with cruelty to children, police said.

Two teenagers were killed and three other people were injured Saturday night when gunfire erupted inside a Houston "pop-up party."

The man went on a two-state shooting rampage on Thanksgiving 2020.

One person was shot and killed in an "isolated" shooting in on-post housing at Fort Eisenhower on Saturday, according to the base.

The firearm found on the suspect in the murder of the UnitedHealthcare CEO is believed to have been an untraceable ghost gun, according to police.

Police in Pennsylvania are searching for the gunman wanted for killing a young man and wounding his mother during a home invasion in an upscale Philadelphia suburb.

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

Investigators provided more information on the shooting at a Christian school in California that has left two kindergarteners in critical but stable condition.

One person has been killed and three others injured, including the suspected gunman, in a shooting inside an Indiana laundromat, police said.

A gunman opened fire at a Christian grammar school in California on Wednesday, authorities said.

UnitedHealthcare CEO Brian Thompson was shot near a Midtown Manhattan hotel in a potentially targeted shooting early Wednesday, according to police.

A 7-year-old boy fatally shot his 2-year-old brother while sitting in a truck after finding a gun in the glove box, according to authorities in California.

Shots rang out at the Park Plaza Mall in Little Rock, Arkansas, on Black Friday, leaving two people injured, police said.

Two people were killed and 11 others were hurt in two shootings that erupted 45 minutes apart near a second line parade in New Orleans on Sunday, authorities said.

The president of Tuskegee University in Alabama announced that the school is being closed to outsiders following a mass shooting.

Jaquez Myrick, 25, was arrested in relation to the deadly homecoming event shooting at Tuskegee University in Alabama on Sunday.

A North Carolina State student has been arrested for a string of apparently random shootings at cars on multiple highways in Raleigh.

Several replica guns have been recovered from the home of a 13-year-old who allegedly planned to scare students at an elementary school.

ABC News follows gun violence survivor Drew Spiegel and Rep. Maxwell Frost as they push for stricter gun laws.

Gun-violence prevention groups said that they plan to double down in their fight for stronger firearm-control laws in the wake of former President Donald Trump's win.

At least two people are dead and six others have been injured in a Halloween night shooting in downtown Orlando, police said.

A 22-year-old man has been arrested and identified as a suspect in a deadly shooting that erupted on Halloween night in a mall in Vancouver, Washington.

Detective Sgt. Monica Mosley, with the Cumberland County Prosecutor's Office in New Jersey, was fatally shot at her home in Bridgeton on Oct. 15, according to police.

Attention paid to gun violence prevention has had to compete and, at times, has been overshadowed by other hot-button campaign topics.

Opening statements were presented Thursday in the murder trial of former Columbus police officer Adam Coy, accused of killing Andre Hill.

A suspect has been arrested in connection to three separate shooting attacks on a Democratic National Committee office in Arizona, the Tempe Police Department said.

Three children and two adults are dead, and a teenage boy is in custody, following a domestic violence incident at a home in Washington state, authorities said.

A 77-year-old woman was arrested after the alleged fatal shooting of a man who "jokingly" asked her to shoot him on Sunday.

When Colt Gray rode the bus to his Georgia high school on the morning of Sept. 4, he had a long gun hidden in a poster board, video showed.

The long-time employee of a Southern California college who was wounded by another employee in a workplace shooting earlier this week has died, the college said.

A hundred survivors and family members of victims of the deadliest mass shooting in Maine's history announced Tuesday their intent to sue the military.