PASADENA (CBSLA.com) — The public’s help is needed Friday to identify a man who threw a homemade explosive device into the Cheesecake Factory restaurant in Pasadena.

No one was hurt in the blast, which was reported at 6:08 p.m. Thursday at the restaurant at 2 W. Colorado Blvd.

READ MORE: Witnesses Describe Chaotic Scene As Fatal Officer-Involved Shooting Unfolds Near U.S. Open Of Surfing

The restaurant was immediately evacuated and officers located the detonated homemade pyrotechnic device, according to the Pasadena Police Department. The Los Angeles County Sheriff’s Department Bomb Squad also responded to the scene and rendered the device safe, police said.

“Pasadena Police detectives are currently handling the investigation and out of an abundance of caution the federal authorities have been notified,” a Pasadena police statement said. The motive is not known.

READ MORE: Funeral Service To Be Held In Covina Hills For Lance Cpl. Dylan Merola Who Was Killed In Afghanistan

Witnesses described the suspect as either Hispanic or Middle Eastern, 6 feet tall, with a thin build, a heavy beard, all black clothing and a black beanie.

Anyone with information about the explosion or the suspect can call the Pasadena Police Department at (626) 744-4241.

MORE NEWS: Mother, 2-Year-Old Son Fall To Their Deaths At Petco Park In San Diego

(©2017 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)