Scott Peterson prosecutor asks judge to slam door on key to killer's latest appeal

Prosecutors have asked a California court to block new DNA testing of disputed evidence in the 2002 murder of pregnant Modesto woman Laci Peterson and her unborn son Conner - potentially setting up a road block at the heart of her husband and convicted killer Scott Peterson’s latest appeal.

The Los Angeles Innocence Project picked up Peterson’s case in January.

Lawyers have been arguing that a mattress found in a burned out car near where he lived with Lacey Peterson back in 2002 could...