The father of a slain off-duty Lee's Summit police officer has filed a wrongful death lawsuit against the restaurant where the shooting happened and the alleged shooter.

The Kansas City Star reports that Thomas Orr Jr. file the suit on behalf of his son, Thomas Alvin Orr III. The lawsuit accuses Californos, the restaurant that hosted an all-day party in August where the 30-year-old officer was shot, of negligence.

The lawsuit also names Sean Steward, of Kansas City, who has been charged with second-degree murder and other counts in the Aug. 20 shooting. Police have said Orr was not the intended target and was shot during an argument between other people at the restaurant.

The lawsuit seeks to recoup Orr's lost wages, funeral expenses and other damages.

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