Friends and family are mourning after a 16-year-old girl was shot and killed in an apartment in a wealthy suburb of Chicago.

Lilly Bova was shot mid-morning on Saturday at her apartment in unincorporated Glenview, according to the Cook County Sheriff's Office. Police were called to the scene at around 11 a.m., where they performed life-saving measures before Bova was taken to a hospital. She was pronounced dead shortly thereafter.

In a Monday morning update, police said the incident was isolated and there is no ongoing threat to the community. They encouraged anyone with information about the shooting to come forward. 

"She was a great person. Always had a smile on her face. It’s just so sad," said Samuel Thompson, a friend of Bova's who spoke with myfox8.com.

"Honestly, (she was) just a really good, kindhearted person," said Laith Bardic, another friend. "You hate to see it in the community because it’s a really good area, everyone knows each other and everyone’s really close."

"It is with deep sorrow that we inform you of the loss of sophomore Lilly Bova, who tragically died on Saturday, March 28, while at home. We are keeping her family in our thoughts and respecting their need for privacy as they grieve this unimaginable loss," the letter reportedly said.

"Though Lilly was a quiet spirit, her teachers and those who knew her best said she loved deeply and was bright, positive and mature beyond her years. Her kind-hearted and optimistic nature will be sorely missed," the letter continued.

The school is providing social workers for students affected by Bova's death.

Glenview, northwest of Chicago, is known as an upscale suburb of the Windy City where crime is rare.