Police evacuated Brooklyn Technical HS this afternoon after someone reported a bomb threat after hours.

A caller told cops there was a bomb on the campus on Fort Greene Place at 4:35 p.m., but after hours of searching, police had not found any evidence of a bomb.

They are still on scene, searching the campus.

It was not immediately clear how many people had to be evacuated.

The incident occurred after school hours, and no one was injured, police said.

This evening, police said that there was no bomb.

kconley@nypost.com