A decomposing body found wrapped and concealed under an old mattress in Bessemer is that of a woman missing out of Midfield since February.

Authorities on Thursday formally identified the remains as 30-year-old Tiffany Osborne, a mother who vanished on Feb. 17, said Midfield. Her death is being investigated as a homicide.

Osborne was last seen that Monday in the Fairfield Highlands area of Midfield. Det. Michael Jeffries said her boyfriend told investigators she left her Seventh Street home to go to a neighborhood store and never returned. She was reported missing two days later.

Osborne was a mother to three children, including a 3-month-old. Police and family members have been searching for her. Law enforcement carried out a search warrant at her home in March.

The detectives said friends and family were in contact with Osborne all during the weekend prior to her disappearance. He said those who know her best say I was unusual for her to not be in contact with them.

The remains were discovered about 9:20 a.m. Wednesday in the 4200 block of Turin Drive in an industrial area of off Lakeshore Parkway. The scene was at the end of an unfinished road that is a frequent site of trash dumping.

Bessemer police Lt. Christian Clemons said the body was wrapped up and had been hidden under an old mattress. The victim was pronounced dead on the scene at 9:25 a.m.

Investigators were fairly certain Wednesday the remains of those were Osborne, and an autopsy Thursday morning confirmed their suspicions.

Jeffries said anyone with information is asked to call the police department at 205-923-7575. Tipsters who wish to remain anonymous can call the department’s tipline at 205-754-3559 or Crime Stoppers at 205-254-7777.