2 TEENS HELD IN SLAYINGS\Chatsworth pair's son knew 1 suspect.

Byline: Jaxon Van Derbeken Daily News Staff Writer

Two Los Angeles teen-agers were being held Thursday in the Jan. 2 slayings of a Chatsworth couple shot to death in what police say was a home-invasion robbery.

Police said Rickey Smith, 19, surrendered Wednesday, and his 17-year-old cousin was arrested Thursday in the slayings of Richard and Donna Landau and the wounding of the couple's 15-year-old son Jonathan.

Los Angeles police Capt. Vance Proctor said Jonathan Landau had known Smith from school, and he had invited Smith to the family's Owensmouth home the night of the slayings.

Proctor declined to say what exactly triggered the killings of the husband and wife.

"The motive, in our opinion, was robbery," Proctor said.

Jewelry, pagers and other items were taken from the home but have not been recovered, he said.

Both suspects were held on suspicion of murder Thursday. Police said they will attempt to have the 17-year-old prosecuted as an adult. The suspect's name was withheld by police because of his age.

LAPD Detective Marshall White said that on the night of the slayings, Jonathan Landau bumped into Smith at a local Hughes Market and Smith came over to the home.

"The one individual, Rickey Smith, was allowed in by Jonathan, and later on the suspect, Rickey, let the second suspect in," White said. The door had been locked previously, White said.

White said Jonathan Landau, wounded in the right leg and bound, feigned death and then concealed himself.

"He was hiding, he was scared - he sees his mother and his father shot, and he's shot - he's scared to death."

Police say the robbery and shootings lasted 15 minutes. The parents were bound before they were each shot in the upper body. No murder weapon has been found, police said.

Jonathan's brother, Jason, 18, was not at home at the time.

Police said that the Landaus' sons were not involved in the slayings and assisted detectives in identifying the suspects.

"There has been much speculation as to the involvement of Jonathan Landau and his older brother, Jason Landau," Proctor said. "Both Jason and Jonathan are strictly being treated as witness and victim in this case."

Harold Musnug, the father of the two Landau boys and ex-husband of Donna Landau, said Thursday he was gratified at the news.

"I'm glad they did catch someone," he said, adding that his sons have been hit hard by the death of their mother and the father who adopted them. "They are pretty well shook up."

He said both boys had mentioned to him the name of their parents' attacker, but he did not ask too many questions.

"They just said, Rickey. I don't know who that is. I knew it was a tragic event. I knew the police would do what they needed to do."

White said investigators searched five locations Saturday but were unable to locate Smith.

Richard Landau, 43, was a film-industry landscaper and most recently worked on the television show, "Dr. Quinn, Medicine Woman." Donna Landau, 39, was on disability from her job as a ticket agent for Delta Airlines.

Michelle Charles, 17, a friend of the Landaus, said Smith had been living at a boys home nearby and was a frequent visitor to the Landaus' home.

"I'm so happy that they got caught," she said.

CAPTION(S):

PHOTO

(1) Detective Ismael Aldez, left, Detective Marshall White and Capt. Vance Proctor tell reporters about arrests in a fatal Chatsworth shooting. Hans Gutknecht/Daily News (2) Rickey Smith Had been invited to home