Prosecutors Tuesday said they had new evidence that music producer Phil Spector threatened women with violence, including ranting at comic Joan Rivers' annual Christmas party that women "deserve to die. They all deserve a bullet in their head."

One of his former assistants also is prepared to testify that Spector put a gun to her head and refused to let her leave his home after parties, prosecutors said in court motions seeking to introduce the new evidence at the music legend's murder trial later this month. Spector is accused of shooting and killing actress Lana Clarkson at his Alhambra mansion in February 2003.