A man was detained by Los Angeles police Friday morning but it was unknown why he was being held.
Earlier, police said the man was a person of interest in a search for the suspect in a rape at an East Hollywood Metro station earlier this month. But officials later said he was not related to that crime at all.
Police have said the man is being held on unrelated charges but no other details have been released.
The search continues for the man who raped, strangled and punched a woman in a secluded emergency stairwell at the Metro Red Line's Vermont/Sunset station located in the 1500 block of North Vermont Avenue, police said.
The man taken into custody on Friday was reported by a person at the same station, who thought he matched the description of the rapist, authorities said. But it turned out to be the wrong man.
Surveillance images have been released of the suspect.
He is described by police as a black man who stands about 5 feet, 7 inches to 5 feet, 10 inches tall and weighs around 165 and 180 pounds, with a shaved head. Police have said he has a 2- to 3-inch scar on his left forearm and earring in his right ear.
KTLA's Jennifer Thang contributed to this report.