Sabehgi told the Guardian from hospital he was walking alone along 14th Street in central Oakland - away from the main area of clashes - when he was injured.
"There was a group of police in front of me," he told the Guardian from his hospital bed. "They told me to move, but I was like: 'Move to where?' There was nowhere to move.
"Then they lined up in front of me. I was talking to one of them, saying 'Why are you doing this?' when one moved forward and hit me in my arm and legs and back with his baton. Then three or four cops tackled me and arrested me."
Sabeghi ... said he was handcuffed and placed in a police van for three hours before being taken to jail. By the time he got there he was in "unbelievable pain".
Sabehgi was due to undergo surgery on Friday afternoon to repair his spleen, which would involve using a clot or patch to prevent internal bleeding.
Local San Francisco ABC affiliate KOFY News interviewed Sabehgi's sister tonight, who said that Sabehgi lived near Frank Ogawa Plaza (the center of the Occupy protests), and was walking home Wednesday night away from violence when police stopped him. Sabehgi said that police ordered him to walk in another direction, and he simply asked "why?"
In response, according to Sabehgi's sister, the police beat him mercilessly with batons.
Sabehgi was then kept in a holding cell for 18 hours. Despite begging to see a doctor, Sabehgi was refused medical assistance. Instead, according to Sabehgi, his jailors accused Sabehgi without any cause of being a heroin addict and alcoholic and - instead of providing medical help for his severe injuries - told him to stop taking heroin.
There is apparently a videotape of the incident (KOFY noted that "police are reviewing video of the incident").