Police will not release the name of the “person of interest” in the case of 16-year-old Jholie Moussa, because the person is 17 years old.

In a press conference on Tuesday, police said the person of interest has been identified as a 17-year-old male. He was arrested on Jan. 18 and charged with felony assault.

Jholie was last seen on Jan. 12. She told her twin sister that she would be right back, but never returned. Her family reported her missing the next day.

The 16-year-old was labeled as a runaway because she left her home voluntarily.

RELATED: A timeline of the Jholie Moussa case

Her body was found in Woodlawn Park on Jan. 26 by officers who were searching for her.

WUSA9 reporter Peggy Fox learned Jholie’s body was found in the same park where the last call to her cell phone was made.

Jholie received a call on the evening of Jan. 12—the call came from a phone that belonged to a 13-year-old boy who was playing basketball in Woodlawn Park.

RELATED: Fairfax teen was called from the park where her body was found, family says

That boy told WUSA9 he let a man he did not know borrow his cell phone.

That last call could be key to finding out what happened to the teen.

WUSA9 has multiple crews headed to the Tuesday afternoon news conference. This story will be updated once police release more information.