D.A. Wants Boy, 16, Tried as Adult in Girl’s Slaying : Crime: If he were to be convicted in Superior Court, the youth could receive a 30-year prison term.

Prosecutors Thursday said they will seek to try a 16-year-old from North Hollywood as an adult on charges that he fatally shot his 14-year-old girlfriend and then dumped her body in a Kagel Canyon creek bed.

The suspect, who pleaded not guilty to murder, is scheduled to return to San Fernando Valley Juvenile Court in Sylmar on April 30, when a date will be set for a fitness hearing to determine whether he will be tried as an adult.

If the case remains in Juvenile Court, under state law, the maximum sentence that the boy would face is incarceration in a California Youth Authority facility until his 25th birthday. As an adult in Superior Court, he would face a maximum sentence of 30 years to life in prison.

Police said they believe that the boy shot Blanca Medina sometime last weekend. Her body was discovered Sunday, three days after her parents reported her missing when she failed to return home from school.

Medina lived in Pacoima and was voluntarily bused to Byrd Middle School in Sun Valley.

Police do not have a motive for the killing, but authorities said friends of Medina said that she feared her boyfriend, who was possessive and jealous. Police believe that the boy also shot her in January, even though the girl reported the incident as a drive-by shooting.

Ballistics tests are being conducted to determine if the bullets from the two shootings came from the same gun.