GWINNETT COUNTY, Ga. -- It was a crime that shocked the community: four children and a father dead. Nine-year-old Diana Romero was the sole survivor, a witness against her mother. Isabel Martinez faces 16 counts of murder, malice murder, and aggravated assault. The officers that responded to that tragedy are now stepping up to help the community heal.

The Gwinnett County Sheriff's Office shared a photo of a small playground at the center of the tight knit mobile home community where the Martinez children played. "These children have been deeply affected by this horrific tragedy," the Facebook post said.

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The Sheriff's Office is asking people to drop off toys and school supplies at their headquarters on University Parkway in Lawrenceville. They also were hoping to replace the small worn out playground

"As law enforcement, we often see the worst in people. This has given us the opportunity to see the very best in people," Gwinnett Sheriff's spokesperson Shannon Volkodav said.

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She called the response so far "overwhelming." One generous community member already ordered a whole new play set to be delivered next week.

They are collecting toys and clothes for girls and boys though 12 years old through August 7. They are also collecting gift cards for the lone survivor, Diana.