California inmate dead after attack by prison cellmate

California prison officials say an inmate serving time in Corcoran State Prison for murder is dead after he was attacked by his cellmate.

The California Department of Corrections and Rehabilitation says inmate Shawn Keith Wilson was pronounced dead Tuesday after at a hospital outside the prison.

Officials say the 35-year-old Wilson was attacked in his cell on Saturday by his cellmate, 27-year-old Chad Michael Carl.

Wilson had been serving a 16-year to life term for second-degree murder in San Diego County since July 1999.

Carl, from Los Angeles County, had been at the prison for about five years, serving a 27-year to life term for vehicle theft with a prior conviction.
  Officials say the exact cause of death has not yet been determined.