The LAPD bomb squad has responded to Gloria Allred's office building to investigate a potential threat ... TMZ has learned.
A rep for the LAPD tells TMZ ... officers are investigating a "suspicious package" sent to the building ... though it's unclear if the package was addressed to Allred's office.
At least 5 LAPD squad cars have arrived to the scene.
We're told Allred is not in her office -- and has been out doing a shoot for a TV show as the drama has been unfolding.
Story developing ...