Yosif Al-Hasnawi was participating in a religious celebration at the  Al-Moustafa Islamic Centre on Main Street East on Dec. 2, 2017, when, around 9  p.m., ET he walked outside with his younger brother.
         
        He saw two  men "accosting" an older man, police say. He intervened, and that  turned the culprits' attention to Al-Hasnawi.
    
    Hamilton, Ontario police released new pictures of the man they believe Yosif  Al-Hasnawi was trying to help the night he was killed.
    
    Two men have been arrested in connection with Al-Hasnawi's death. 
    
    
        Twenty-year-old  James Matheson is charged with being an accessory after the fact to murder and  19-year-old Dale Burningsky King, who police allege was the shooter, is charged  with second-degree murder.
         
        The man can  be seen wearing a heavy coat, loose pants, a hoodie and is carrying a plastic  bag. Investigators believe he may have been the person being accosted by two  other men when Al-Hasnawi intervened.
         
                They  describe, in the claim, watching Al-Hasnawi "lying on the pavement in  pain, holding his stomach and with a clear and visible bloody shotgun  wound."
  
  
        The City of  Hamilton, which operates Hamilton's paramedic service, is preparing a statement  of defence, said spokesperson Allison Jones.
         
        "We  continue to work closely with Niagara Regional Police and the Ministry of  Health and Long-Term Care to preserve the integrity of all investigative  processes currently underway," she said.
         
        Hamilton  Police Service wouldn't comment, citing the ongoing lawsuit. St. Joseph's  Healthcare, through spokesperson Maria Hayes, said the hospital received the  statement of claim Friday and "will be reviewing it."
    
    
        Suspects also  sued
    
    
        Yosif  Al-Hasnawi was participating in a religious celebration at the Al-Moustafa  Islamic Centre on Main Street East on Dec. 2 when, around 9 p.m., ET he walked  outside with his younger brother.
         
        He saw two  men "accosting" an older man, police say. He intervened, and that  turned the culprits' attention to Al-Hasnawi.
         
        The situation  moved roughly half a block east, to Sanford Avenue, where Al-Hasnawi was shot,  police say.
         
        Dale  Burningsky King, 19, faces second-degree murder charges. James Matheson, 20, is  charged with being an accessory to murder after the fact. Both are also named in  the lawsuit.
         
        'Terrible  agony'
  
  
        Since he was  10, Al-Hasnawi contributed money to the household, the claim says. He fixed  electronics and helped pay for rent, food, utilities and other expenses.
         
        He planned to  be a doctor, the claim says, and was a pre-med student at Brock University when  he died. He planned to keep living with his family once he was a doctor, it  says, so he could help them have "a comfortable standard of living."
         
        His family  members have "recurring ruminations over the horrible way the late Yosif  Al-Hasnawi met his death, the terrible agony he endured before perishing,"  it says. 
         
        The suit,  filed through Toronto lawyer Susan von Achten, also lists unnamed crew members  and police constables.  
         
        Police wonder  if 'accosted' man in Al-Hasnawi homicide doesn't want to be found.