Robby Gordon on probation
"His [Gordon's] actions were brought to our attention early [Friday] evening," NASCAR spokesman Kerry Tharp said. "We met this morning and reviewed the situation and have reacted accordingly. We will continue to look at this situation involving Robby Gordon."
Tharp said Conway was not penalized.
Gordon and Conway had a business relationship last year, and Gordon has claimed in recent reports that Conway owes him money. Gordon has filed a lawsuit against Conway.
Conway said he filed a police report Friday evening.
"On Friday night, Robby Gordon, who has a long history of issues in NASCAR decided to ambush me in the garage area at the Las Vegas Motor Speedway, completely unprovoked," Conway said Monday in a release. "Robby even confronted Joe Nemechek, my car owner, on pit road during Cup Series qualifying shoving him and telling him that he was looking for me and going to assault me. We have many witnesses including a crew chief that signed a police report documenting the truth of his physical attack on me."
Gordon was unavailable for comment because he was in his car practicing Saturday.
Terry Blount is a senior writer for ESPN.com. Information from The Associated Press was used in this report.