5 dead, including 2 children, in mass shooting in South Carolina

Police said a suspect is in custody.

According to the York County Sheriff’s Office, five people, including two children, were killed in a shooting at a house in Rock Hill, South Carolina.

A sixth person has also been shot and has serious injuries. The suspect, authorities said, has been arrested.

“We have identified the person we believe is responsible for the Marshall Rd shooting. We found him in a nearby house. There is no active threat to the community,” tweeted the York County Sheriff’s Office.

The sheriff’s office identified the victims of Dr. Robert Lesslie, 70, and his wife, Barbara Lesslie, 69, their two grandchildren and James Lewis, 39, who was working from home on Wednesday when he was shot.

According to the York County Coroner’s Office, all deaths are investigated as murders.

Authorities have not released the suspect’s name, nor released a motive. “We hope to share more information about this tragic event as soon as possible. Thank you for your patience,” said the sheriff’s office.

Delegates were sent to a home near 4400 Marshall Road around 4:45 p.m. ET Wednesday due to a report of a shooting involving multiple people. That’s when authorities discovered the victims.

The next press conference is expected on Thursday morning.

This is a story in progress. Please check again for updates.

Alexandra Faul of ABC News contributed to this report.