Police arrested 17-year-old Prince Watson last month in connection with the death of 68-year-old Sally Katona-King. Katona-King was on her way home from work when she was pushed down the stairs of the Fullerton Red Line station. Prosecutors say Watson had just stolen an iPhone from a person on the platform and pushed Katona-King as he ran away.
Watson faces first-degree murder charges in Katona-King's death.
He is also a suspect in three other iPhone robberies.
