Joshua Sudock, Orange County Register, Pool photo
Fullerton police officer Jay Cicinelli listens to Tony Rackauckas, Orange County's elected district attorney, during day three of the preliminary hearing into the death of Kelly Thomas.
Police say an officer involved in a violent clash with a mentally ill homeless man who later died is no longer employed by the city of Fullerton.
Acting Chief Dan Hughes said in a statement that Cpl. Jay Cicinelli's employment with the Orange County city ended Friday.
Hughes declined to say whether Cicinelli resigned or was fired.
Cicinelli is the third of six officers involved in the beating death of Kelly Thomas to leave the department this month.
He is charged with involuntary manslaughter and use of excessive force under the color of authority and has pleaded not guilty.
The 37-year-old Thomas was killed last year during a struggle with police who were investigating reported car burglaries. Thomas was injured in the confrontation and died five days later.