SANTA ANA, California — A former Marine convicted of killing three women in the Midwestern state of Illinois pleaded not guilty Friday to murdering five more women in California.

Andrew Urdiales entered the plea in Superior Court in Santa Ana, said Farrah Emami, a spokeswoman for the Orange County District Attorney’s Office.

Authorities allege Urdiales killed five women in Orange, Riverside and San Diego counties between 1986 and 1995. Many of the victims were prostitutes who were repeatedly stabbed or shot.

Urdiales was convicted in 2002 of two murders in Illinois and a third in 2004 and sentenced to death. Two of those sentences were commuted to life without the possibility of parole in 2002 by then-Gov. George Ryan. When Illinois banned the death penalty, Urdiales’ third sentence also was commuted to life without the possibility of parole.

Last year, Urdiales was extradited to Orange County, where prosecutors are seeking the death penalty.