One security guard was killed and another was injured in a stabbing attack at a Macy's department store in Philadelphia on Monday morning, authorities said.

The district attorney says a guard was asleep on duty when two inmates escaped their cells in May. Motion detectors in the jail were also not working.

Large groups of teenagers stormed into shops in the heart of downtown Philadelphia on Tuesday night and looted handfuls of merchandise before fleeing.

The teachers claim their First Amendment rights were violated after they were docked two days' pay for protesting the handling of asbestos in the building.

The father of a 13-year-old boy who was wounded in a Fourth of July mass shooting in Philadelphia, said 15-year-old Daujan Brown, died trying to protect his child.

A teenager was fatally shot on a SEPTA platform in Philadelphia on Saturday, according to police.

One of the two inmates who had escaped the Philadelphia Industrial Correctional Center has been taken into custody, police said Thursday night.

Police said they apprehended a woman who was recorded on a phone call with one of the two fugitives.

The School District of Philadelphia announced on Friday that a high school and an elementary school would close after asbestos was found.

Two Philadelphia schools are immediately closing due to asbestos concerns amid a districtwide review of records on the potentially hazardous mineral fiber.

The city's drinking water will not be affected by a chemical spill near the Delaware River, according to an update from the Philadelphia Department of Water.

Philadelphia, which is battling an epidemic of gun violence, has reached 300 homicides for the year, police said.

Police said they are seeking seven suspects total in connection with the June 24 attack.

Investigators are hoping to identify a group of teenagers seen on video attacking a 73-year-old man who later died from injuries.

At least two suspects in a mass shooting Saturday night Philadelphia are expected to be charged as early as Monday afternoon, according to prosecutors.

Authorities said congresswoman Mary Gay Scanlon’s car was taken from her at gunpoint in Philadelphia. The car was found in Delaware, and she was not physically hurt in the incident.

Gun violence in Philadelphia was prominent over the weekend after 11 people were shot in a 24-hour period, according to police.

Off-duty Philadelphia police officer under investigation for DUI after driving car into occupied house

Five people were injured, including three teenagers.

An alleged "contract killer" has been charged with four counts of murder that took place in 2018 and 2019, the Philadelphia District Attorney's Office announced Friday.

Two men were accused of wearing blackface at the annual Mummers Parade in Philadelphia.

“It’s not us versus them,” Philadelphia’s first black female police commissioner, Danielle Outlaw, said at a press conference on Monday.

A 2-year-old girl was shot dead in her home less than 24 hours after an 11-month-old boy was shot and critically injured while in a car.

A 2-year-old child was shot and killed one day after an 11-month-old was shot four times.

Six offers were shot in Wednesday's hours-long standoff in Philadelphia. All survived.

The suspected gunman who unleashed a torrent of bullets at Philadelphia police while barricaded indoors was charged Saturday with attempted murder, court records show.

Maurice Hill, the suspected shooter in the Philadelphia shootout, was charged with attempted murder.

A man scaled down the outside of a 19-floor building to escape a fire Thursday night in Philadelphia.

Nicholas Flacco, 20, was shot in the chest and died Saturday night.

A Philadelphia councilman is "expected to fully heal" after he was stabbed during an attempted robbery near his home Wednesday night.

A Philadelphia judge has ordered prosecutors to criminally charge the speeding Amtrak engineer involved in a derailment that killed eight people and injured about 200.

ABC News' David Muir reports the stories people have been buzzing about.

The largest city in the battleground state of Pennsylvania will have mass transit running on Election Day.

The suspect in the shooting rampage has been identified as Nicholas Glenn.