Indio police confirmed on Thursday that the suspect detained has been released after questioning.
Police said the suspect was a person of interest in a deadly shooting in the area of Calhoun Street and Dr Carreon Boulevard on Sept. 22.
The search for that killer is still ongoing.
The Calexico Police Department said they arrested a murder suspect from Indio.
The arrest occurred at around 10 p.m. in Calexico on Saturday as the suspect crossed the border.
According to authorities, the 19-year-old man is the prime suspect in the shooting and killing of another man from Indio.
The police then booked him into Imperial County jail, and awaits extradition to the Riverside County jail for court proceedings.
There were no details on the homicide the man was arrested for. Stay with News Channel 3 as more information becomes available.