Fast and Furious star Tyrese breaks down at the site that killed his friend, Paul Walker

Actor/singer, and co-star for Fast and Furious, Tyrese Gibson was overcome with grief Sunday afternoon when he showed up to the crash site where his Fast and Furious pal, Paul Walker died less than 24 hours before.

During a quick stop to the Santa Clarita crash spot, Tyrese paid tribute to Walker.

Tyrese along with fans were mourning with tears, as they left flowers, DVD's of the actors films, notes to Walker and more.

As seen on the TMZ video, Gibson is clearly falling apart while visiting the death site ... and everyone around him is completely silent while he mourns.

TMZ also showed a picture of Tyrese holding a piece of the crash wreckage, in which he took home with him and posted the picture of it online, after leaving the crash site.

LA Times reports that, Joel Perez, 23, another fan who gathered at the site Sunday, said Walker's "gone but he'll never be forgotten because there are so many people that look up to him."

Perez said he also wanted to pay respects to the other person, who has not officially been identified, killed in the accident.

"I wanted to say rest in peace too because he also has a family and no one's family should have to go through that," Perez said.

Los Angeles County sheriff's officials said speed may have been a factor in Saturday's crash, which took place on a normally quiet street with a 45 mph speed limit at about 3 p.m.

Investigators on Sunday sought to sort out the circumstances of the single-vehicle crash. Walker was the passenger in the red Porsche.

Here is a video of actor Tyrese, obtained by TMZ in tears and in shock, after losing his friend, Paul Walker.