Police are investigating an altercation early Saturday morning between Cleveland Browns quarterback Johnny Manziel and his ex-girlfriend.

According to a Fort Worth police report, officers responded to a report of a possible assault at the Berkeley Luxury Apartment Homes near TCU around 2 a.m. and talked with a 23-year-old woman who stated she was involved in a disturbance with her ex-boyfriend earlier in the evening in Dallas.

Fort Worth Police Department Press Release regarding Johnny Manziel pic.twitter.com/n4Avlmxhs6 — Fort Worth Police (@fortworthpd) January 30, 2016

"The preliminary investigation determined that a possible assault had occurred in that jurisdiction or multiple jurisdictions," the report states. "The complainant was uncooperative with officers on scene, and they were unable to locate a crime scene within the Fort Worth jurisdiction, however, our officers prepared a report nonetheless, and that information was forwarded to detectives for further investigation."

The report also states the woman was concerned about the well-being of her ex-boyfriend -- who Fort Worth police publicly stated on Twitter was Manziel -- which launched an effort to locate him that involved the police's "Air One Unit," a helicopter. They later determined that Manziel wasn't in danger.

The Dallas Police Department acknowledged "it had been notified by the Fort Worth Police Department of a possible offense that may have occurred within the Dallas city limits" and are in the preliminary stages of investigating the case.

Manziel had been dating Colleen Crowley, but the two appear to have split up, deleting photos of one another from their Instagram accounts.

In October, Manziel was questioned by Ohio police after he and Crowley were involved in a heated argument on a highway. According to the police report from that time, Manziel was driving at a high rate of speed and passed cars on the shoulder before police were called.

In a dashboard camera recording, Crowley told police Manziel hit her a few times and that she threw his wallet out of the window after Manziel took her phone and wouldn't give it back. No charges were filed.

NFL spokesman Greg Aiello said the league was aware of Saturday's incident and is "looking into it."

Manziel starred at Texas A&M before being drafted 22nd overall by the Browns. He has spent a tumultuous two years in Cleveland.

Last offseason, Manziel checked himself into a rehab facility. This season, Manziel started six games for the Browns but was demoted to third string in November after a video surfaced of him partying in Las Vegas. He reportedly lied to Browns officials about the video.

Before the Browns' final game of the season, Manziel, out with a concussion, was reportedly spotted at a Las Vegas night club. He then didn't report to the team medic on the final Sunday as required to and couldn't be reached.

Staff Writer Claire Z. Cardona contributed to this report.