A Fairfax County juvenile court judge found "probable cause" yesterday that a 15-year-old county youth was responsible for the shooting death of a Fort Hunt teen-ager last month.

The finding, the equivalent of a preliminary hearing for an adult, means that the youth can now be tried for the alleged offense.

Juvenile Court Judge Frank L. Deierhoi released the youth in the custody of his mother until a hearing on a probation report can be held, probably in four to five weeks.

Fairfax Commonwealth's Attorney Robert F. Horan Jr. has told the court he may want have the boy certified to stand trial as an adult depending on the probation report. A separate hearing would be required.

The youth is charged as juvenile with the equivalent of an adult murder charge in connection with the shooting death of 17-year-old Carolyn Jean Cordon of 1402 Middlebury Dr., south of Alexandria.

According to Horan. Cordon had been shot once through the heart with a small-caliber rifle after an altercation involving "some teasing."

A police investigator and a juvenile witness testified at yesterday's closed hearing, according to Vincent T. Picciano, director of the Juvenile Court.

Under the terms of the youth's release, the youth must contact a probation officer daily and is under 24-hour adult supervision, Picciano said. There is a $5,000 cash bond on the youth and a $10,000 bond on the youth's mother and on older sister, he said.