The incident happened around 7:30 p.m. on the Crenshaw station platform, located in the median of the 105 Freeway near 120th Street.
[Ads /]
It's unclear what led up to the stabbing. Authorities initially said the victim was wounded in a shooting.
A person of interest was detained, authorities said, but further details about his involvement were not immediately available. The person of interest was taken to a hospital with unknown injuries.
The victim was rushed to a hospital but later died.
Deputies were also seen investigating an area near an onramp of the freeway.
[Ads /]
Metro train service between the Hawthorne/Lennox and Vermont/Athens stations was shut down and bus shuttles were provided instead as law enforcement's investigation continued in the area.