Kansas City Chiefs wide receiver Rashee Rice said via social media that he met with Dallas police on Wednesday and takes "full responsibility" for his part in the accident that injured four people on Saturday.

"Today I met with Dallas PD investigators regarding Saturday's accident. I take full responsibility for my part in this matter and will continue to cooperate with the necessary authorities," he wrote in a post to his Instagram Story. "I sincerely apologize to everyone impacted in Saturday's accident."

Rice was leasing a Lamborghini sport utility vehicle that authorities say was one of two speeding sports cars that caused a chain-reaction crash on a Dallas highway, an attorney for the company that owns the vehicle said Tuesday.

The occupants of the Lamborghini and the other speeding vehicle -- a Corvette -- left without determining if anyone needed medical attention or providing their information, police said. A total of six vehicles were involved in the crash.

Rice's attorney, Royce West, said earlier this week that his client was cooperating with authorities "and will take all necessary steps to address this situation responsibly."

Rice was leasing the Lamborghini from The Classic Lifestyle, said Kyle Coker, an attorney for the Dallas-based exotic car rental company. He said that contractually, Rice would have been the only person allowed to drive the vehicle, which rents for about $1,750 a day and is worth about $250,000.

Police have said that the drivers of a Corvette and a Lamborghini were speeding in the far-left lane of North Central Expressway when they lost control. The Lamborghini went onto the shoulder and hit the center median wall, causing a chain-reaction collision. Four people in the other vehicles were treated for minor injuries.

Police said Tuesday that they were still working to identify suspects. Police have not released any information about the people they are seeking, including whether Rice was among them.

On Monday, Chiefs president Mark Donovan told KCMO radio that the team will "gather the facts and we'll react accordingly."

The NFL is monitoring the situation involving Rice, league spokesman Brian McCarthy told ESPN's Adam Schefter on Tuesday.

Rice, a member of the Super Bowl-winning Chiefs team, is from the Dallas area. He played for Southern Methodist University and grew up in the Fort Worth suburb of North Richland Hills.

The Associated Press contributed to this report.