A file photo of Wilson High School.

A precautionary lockdown at Wilson High School has been lifted after Long Beach police officers received calls of possible shots fired on campus Monday morning.

Officers on the scene conducted a safety sweep of the campus and evacuated some students and staff. They soon determined that the calls were unfounded and that the loud noises heard were fireworks, said LBPD spokesperson Richard Mejia.

The fireworks were recovered and the lockdown was lifted as of 12:30 p.m. Monday, said Mejia. There were no reported injuries.

Wilson High School Principal Kimberly Holland said in an email sent to parents that any student involved in lighting the fireworks outdoors will face appropriate disciplinary consequences.