Lindsay H. Jones

USA TODAY Sports

Police in Fort Worth, Texas, filed a report early Saturday after receiving a call about a disturbance involving Cleveland Browns quarterback Johnny Manziel and a woman who described herself to officers as his ex-girlfriend.

Police said in a news release that they could not locate a crime scene in Fort Worth and Manziel had not been arrested. Fort Worth police said a preliminary investigation determined that a possible assault might have occurred in Dallas, but that is not their jurisdiction.

Manziel’s ex-girlfriend declined to cooperate but did tell officers of “concerns that she had regarding the well-being of her ex-boyfriend,” according to the release. Police could not immediately reach Manziel but later determined he was safe and not in danger.

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NFL spokesman Greg Aiello told USA TODAY Sports on Saturday that the NFL was aware of Manziel’s latest incident and was looking into it.

Manziel, the No. 22 pick in the 2014 draft, spent more than 10 weeks in a rehab center that specializes in drug and alcohol treatment last year after a rocky rookie season.

Even without an arrest, the latest incident should be troubling for the Browns as they try to determine if Manziel is part of their future plans under new coach Hue Jackson because of the quarterback's long history of troubling off-the-field incidents.

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Most recently, he was pulled over by police in Ohio in October after an altercation with his then-girlfriend while driving on an interstate. He admitted he had been drinking earlier in the day. He was not arrested and not disciplined by the NFL for that incident.

He also missed the last game of the 2015 regular season after suffering a concussion, though he was spotted in a Las Vegas casino the night before the game.