Actress Rose McGowan personally witnessed a scary "knockout game" attack on Jan. 2 in Venice, Calif. McGowan live-tweeted the incident sharing with her followers that she had just saw a "evil" man attack and punch a 65-year-old man walking his dog.

"I just witnessed a 65 year old man get punched by an evil guy playing that goddamn knockout game. #criminal #heartbroken #whattheF?!" she tweeted.

"Venice! Evil guy was wearing a mask. He was on a skateboard. Too fast. I chased," she continued.

McGowan said that she called an ambulance for the man because he was bleeding from the ear.

"His little dog tried to protect... L" she tweeted.

There's no been no update on the condition of the man. Recently CNN ran a story about the gruesome "game" usually played by teenagers. During the "knockout game" one or more assailants sneak attack an unsuspecting victim in attempt to knock them out with a single blow to the head.

On Sept. 10, a New Jersey native lost his life after three teens viciously punched him in the head before running off. According to CNN, 46-year-old Ralph Santiago, a homeless man, was walking by himself in Hoboken when he suddenly struck from behind, Detective Anthony Caruso said.

The blow to the head knocked Santiago out, who had a pre-existing brain injury. He suffered a seizure and his body hit a wrought iron fence nearby. According to Caruso, a piece of the fence pierced his body and killed him.

Nearby surveillance video showed three teens leaving the scene. A couple weeks after the attack Hoboken police arrested and charged them in connection to the killing. Similar "knockout games" attacks have been reported in other places like New York, Illinois, Missouri and Washington.

In New York, authorities have seen about seven attacks in the fall but said it didn't look like it was a trend. Some of the incidents were classified as hate crimes because the reportedly were directed specifically at Jewish people.

"We know that NYPD, and especially the Hate Crime Task Force, are working swiftly to find the alleged perpetrators of these incidents," Evan Bernstein, the Anti-Defamation League's New York regional director said.