The teen's father cooperated with officers and the family's home is not being searched at this time, according to investigators.
Later Thursday night, police went back to the home where they served a search warrant.
Officers spent less than an hour searching the home. It's unclear what exactly, if anything, police found in the 14-year-old's possession.
Following the incident, Superintendent Eric Dill released the following statement:
"We are working cooperatively with the San Diego Police Department as they investigate a possible threat involving a student. The police contacted the student off-campus. At no time were our students or school in danger. We would like to thank the concerned students who brought this matter to our attention. We encourage all students to report their concerns. We take all threats seriously and investigate promptly to ensure the safety of our schools."
Anyone with information is asked to call Crime Stoppers at 888-580-8477.