Police to Question Survivor of Fatal CityWalk Attack : Violence: Investigators also consider lie detector test for man whose mother and ex-girlfriend were stabbed to death.

Sheriff’s investigators said Tuesday they plan to re-interview and are considering giving a lie detector test to a man who said he was present but unconscious when his mother and ex-girlfriend were stabbed to death at Universal CityWalk.

Sgt. Mike Robinson identified Paul Carasi as the only known witness to what led to the killings of Doris Carasi, 61, and Sonia Salinas, 29. The women’s throats were cut on the roof of a CityWalk parking structure late Sunday after a Mother’s Day dinner.

Paul Carasi, who suffered cuts on his thumb and arm, has told investigators that he was attacked from behind and that he was injured while trying to grab his assailant’s knife.

“He said his assailant had him from behind, and he reached up and grabbed the knife,” Robinson said. “He was dazed and didn’t get a good look at his assailant” and passed out. Carasi said that when he regained consciousness, he found his mother and ex-girlfriend in a pool of blood and alerted guards, Robinson said.

Robinson noted that Carasi has not been identified as a suspect. Nevertheless, a lie detector test is “going to be something we’re going to look at down the line,” he said.

Detectives also want to talk to Donna K. Lee, 44--described by neighbors as Carasi’s current girlfriend--who was found about 15 minutes after the slayings with a deeply slashed stomach alongside the Hollywood Freeway, about four miles from CityWalk.

Lee told authorities that she was robbed and attacked alongside the road.

“I stopped because I was feeling sick to my stomach. . . . A man stopped and he got my purse and stabbed me and I’m dying . . . please, it hurts,” Lee said during the 911 emergency call that she made from a freeway call box at 11:15 p.m. Sunday. A recording of the call was made public Tuesday by the California Highway Patrol.

No suspects have been identified in the attack on Lee, a sheriff’s deputy said.

Investigators plan to ask Lee why officers found a bloody butcher knife--which deputies said may be the weapon used in the CityWalk slayings--and a fanny pack belonging to Doris Carasi near Lee’s car.

Lee, who was stabbed twice in the stomach and had a superficial back wound, underwent surgery. She was listed in fair but stable condition Tuesday, a hospital spokeswoman said.

Robinson said Lee did not accompany Carasi and the others to the Mother’s Day dinner at the Country Star Restaurant on the CityWalk promenade, and no witnesses have reported seeing her there at that time.

All those known to be involved in the incident lived in the same North Hollywood apartment house. Paul Carasi lived with Lee just two doors from an apartment shared by his mother, Salinas and their 2-year-old son, neighbors said.

Lee, Salinas and Paul Carasi worked together at a Bank of America data processing center in Downtown Los Angeles.

Robinson said investigators spent Tuesday morning at the autopsies, trying to determine whether the knife discovered near Lee’s sports car could have inflicted the fatal wounds. Authorities are running blood and fingerprint tests on the knife.

Friends of Paul Carasi described him as being in a state of disbelief over the slayings. He is taking care of his son, who was in the car when the women were killed.

Francisco Avila, who identified himself as a friend of Carasi, said police told Carasi on Monday that his mother and Sonia Salinas were dead, but that Carasi didn’t believe it until he saw a television news report Tuesday morning. “He’s so upset,” Avila said.

Monday, accompanied by a sheriff’s deputy, Carasi showed up with his son at his North Hollywood apartment complex. Despite having been told of the deaths, Carasi began pounding on the door of Salinas’ apartment, pleading loudly, “Open the door, Sonia, open the door.” When nobody answered, Carasi left with the deputy.

Neighbors have said that Doris Carasi objected to her son living with Lee and that several weeks ago they got into a fight in which she hit Lee with her keys.

Times staff writer Nicholas Riccardi contributed to this story.