“No words spoken, no threat posed” that’s how court documents describe the victim inSan Francisco’shorrificChinatown knife stabbing.

The new details come as we learn more about the accused slasher’s demented past — and his influential father.

Jian Feng Huang, 38, on Thursday afternoon approachedan innocent manwaiting at a crosswalk at the corner of Stockton and Sacramento streets in the heart of Chinatown, and without warning stabbed the man, driving a knife deep into his back, prosecutors say.

Viral video of the incident shows the victim reeling in pain as he clutches the wound and collapses.

Cops found the victim with a 3-to-4-inch gash in his lower back “seeping significant quantities of blood,” court documents say.

Minutes later, police on the scene recognized a man who fit the description of the slasher.

The man, identified as Huang, carried a plastic bag bearing a kitchen knife, still slick with his victim’s blood.

Huang was arrested and charged with attempted murder, with his arraignment set for Tuesday.

““This is a horrific attack on an innocent man,” said District Attorney Brooke Jenkins at apress conference Mondayto announce the charges against Huang.

The victim in the stabbing hasn’t been identified.

Source: California Post – Breaking California News, Photos & Videos