The scene after a deadly shooting on July 4 in Highland Park, Ill.

July 6

Krissa Skogen cries while visiting the crime scene of the Highland Park July 4th shooting.

Demetrius Freeman/The Washington Post

July 6

FBI agents process item left at the crime scene.

Demetrius Freeman/The Washington Post

July 6

Items left near the crime scene.

Demetrius Freeman/The Washington Post

July 5

The sprawling crime scene encompasses, in the foreground, the gates of a train line.

Demetrius Freeman/The Washington Post

July 5

A resident watches investigators working at the crime scene.

Demetrius Freeman/The Washington Post

July 5

FBI agents at work at the crime scene.

Demetrius Freeman/The Washington Post

July 5

People fleeing the shooting abandoned items they had taken to the parade.

Demetrius Freeman/The Washington Post

July 5

Ava Dickinson comforts Bree Lucian near the crime scene.

Demetrius Freeman/The Washington Post

July 5

Ava Dickinson and Bree Lucian leave flowers at the crime scene.

Demetrius Freeman/The Washington Post

July 5

Prayers are said at Immaculate Conception Catholic Church in Highland Park for the victims of the shooting.

Demetrius Freeman/The Washington Post

July 5

Vigil attendees at Immaculate Conception Catholic Church pray for the victims of the shooting.

Demetrius Freeman/The Washington Post

July 6

Lori Weisskopf, 50, right, and Jermey Weisskopf, 15, share a moment at a memorial for the victims near the scene of the parade shooting.

Demetrius Freeman/The Washington Post

July 6

A resident prays at the memorial.

Demetrius Freeman/The Washington Post

July 6

A person writes a message on the memorial.

Demetrius Freeman/The Washington Post

July 6

Leah Kolton, 48, and Lexie Kolton, 20, leave items at the memorial.

Demetrius Freeman/The Washington Post

July 6

Lori Weisskopf takes a moment to pray at the memorial.

Demetrius Freeman/The Washington Post

July 7

Flowers and messages are left at a memorial for the parade shooting victims.

Demetrius Freeman/The Washington Post

July 7

Visitors to the memorial site write “Stronger Together” in front of portraits of the victims.

Demetrius Freeman/The Washington Post

July 4

A paradegoer runs for cover after gunfire was heard during the event in Highland Park, Ill.

Lynn Sweet/Chicago Sun-Times/AP

July 4

Children, carrying a Highland Park Aquatics banner, pause after hearing gunfire during the parade.

Gina Troiani-Solorio/Reuters

July 4

The scene in downtown Highland Park after the shooting.

Tyler Pasciak Lariviere/Chicago Sun-Times/AP

July 4

A police officer runs across a street after gunfire erupted.

WLS-TV/ABC 7/Reuters

July 4

First responders work the scene of the parade shooting.

Jim Vondruska/Getty Images

July 4

Police deploy at the parade scene after the shooting.

WLS-TV/ABC 7/Reuters

July 4

Portable chairs left behind at the shooting scene.

Max Herman/Reuters

July 4

First responders work the scene of the shooting.

Jim Vondruska/Getty Images

Police search downtown Highland Park after the shooting. (Tyler Pasciak LaRiviere/Chicago Sun-Times/AP)

Tyler Pasciak Lariviere/AP

July 4

A law enforcement officer responds to the scene.

Jim Vondruska/Getty Images

July 4

Police conduct a search after gunfire erupted along the parade route.

WLS-TV/ABC 7/Reuters

Jully 4

Police search the downtown area of Highland Park.

Tyler Pasciak Lariviere/Chicago Sun-Times/AP

July 4

Empty chairs sit along the sidewalk after paradegoers fled.

Tyler Pasciak Lariviere/AP

July 4

Law enforcement officers confer while conducting a search.

Nam Y. Huh/AP

July 4

Law enforcement officers search the downtown area.

Nam Y. Huh/AP

July 3

Law enforcement search as they walk into a building

Nam Y. Huh/AP

July 4

Students are escorted by police officers from the scene.

Nam Y. Huh/AP

July 4

Law enforcement search the area.

Nam Y. Huh/AP

July 4

Law enforcement officers investigate at the shooting scene.

Tannen Maury/EPA-EFE/REX/Shutterstock

July 4

Chairs and bicycles lie abandoned after the shooting.

Tannen Maury/EPA-EFE/REX/Shutterstock

July 4

Law enforcement officers help evacuate people from an Anthropologie store.

Brian Cassella/Chicago Tribune/AP

July 4

Residents watch from their home on Central Avenue as emergency response units gather at the scene.

Max Herman/Reuters

July 4

Law enforcement search in downtown.

Nam Y. Huh/AP

July 4

A Lake County police officer walks down a sidewalk following the shooting.

Brian Cassella/Chicago Tribune/AP

July 4

Law enforcement officers look at an abandoned park after people fled the shooting.

Tannen Maury/EPA-EFE/REX/Shutterstock

July 4

Empty chairs lie on a street.

Nam Y. Huh/AP

July 4

A woman wipes away tears.

Nam Y. Huh/AP