Watch CBS News
Gov. Tom Wolf has ordered the Pennsylvania Commonwealth Flag on all commonwealth facilities and public buildings to be lowered at half-staff to honor the victims of the mass shootings in El Paso, Texas, and Dayton, Ohio.
President Donald Trump is calling the recent mass shootings "evil attacks" that are crimes "against all humanity" and says unity must replace hatred in society.
President Donald Trump addressed the nation Monday to condemn the mass shootings that happened over the weekend.
While the U.S. is still reeling from the second mass shooting in less than 24 hours, Pittsburgh has been here before.
Police in Ohio say nine people have been killed in the second mass shooting in the U.S. in less than 24 hours.
Virginia Beach officials on Saturday identified the 12 victims killed in a mass shooting at the city's municipal center.
At least 12 people are dead, plus the gunman, and four injured in a shooting at a Virginia Beach municipal building, authorities said.
Many people were killed in a mass shooting at a mosque in the New Zealand city of Christchurch on Friday, a witness said.
The identities of the victims that were inside the Tree of Life Synagogue Saturday are now being released.
Pittsburgh Mayor Bill Peduto is responding to President Donald Trump's call for armed guards in places of worship.
The famous Pittsburgh Steelers logo received a makeover following the deadly attack Saturday morning at a Pittsburgh synagogue.
A small bouquet of dried flowers was wedged inside the padlock on Gate 5 of the killing ground that was the Route 91 Harvest Festival one recent day.
One person is dead and four others are injured following a shooting near Auburn University early Sunday morning.
It was their first time playing at home since the Parkland shooting and the Marjory Stoneman Douglas High School football team won by a notable margin.
A gunman killed two people then fatally shot himself Sunday at an online video game tournament in Florida.
Ten people were killed Friday when a 17-year-old gunman opened fire in the school, but Houston Texans star defensive end J.J. Watt is offering to help families of the victims.
Can a school ever be fully secure? Retired West Jefferson Hills Superintendent Dr. Michael Panza says, "unfortunately no."
Some local college students have teamed up with the Pittsburgh FBI Office.
How was it possible for suspected gunman Stephen Paddock to smuggle as many as 19 rifles, including AR-15-style automatic rifles into his Las Vegas hotel room undetected?
The U.S. psychologist who wrote a book about school shootings that investigators found in the Munich gunman's room says researching other mass killers can be a warning sign since young gunmen often are looking for role models...
Authorities say they have responded to a shooting at a business in south-central Kansas that makes lawn mower products.
Authorities are responding to a report of an active shooter at a community college in southwestern Oregon.
Movie theater chain Regal Entertainment Group has begun to check bags in response to shootings at theaters around the country, a procedure it acknowledged on its website was "not without flaws" and would inconvenience guests but provide better security.
What if anything should be done to keep people safe in theaters after Wednesday's incident in a Tennessee movie theater?
