CHICAGO — The death of a woman found unresponsive in the city’s Grand Crossing neighborhood has been ruled a homicide.

Chicago police said Wednesday they have a person in custody.

The 30-year-old woman, identified as Sierra Jamison, was found in a garage in the 7800 block of South Indiana around 6:30 p.m. Monday. She was pronounced dead on the scene.

Kaylin Williams, her cousin, said Jamison had just moved into the rental home with her. Her mom was concerned when Jamison was not answering her phone.

“She finally went through the backyard to go into the garage and she found my cousin laying on the floor, lifeless,” Williams said.

An autopsy revealed Jamison died of strangulation and her death was ruled a homicide.

Family members said Jamison was a successful, independent and loving mother.

“We just had her 30th birthday party,” Williams said.

Jamison leaves behind a six-year-old son and family members who looked up to her and the way she lived her life.

“She’s unique, she’s everything, she’s a great mother,” Williams said. “He truly took a gift from God away from us and it’s beyond sad.”

No further details have been provided at this time.