A video circulating on social media Tuesday night appears to show two TTC officers punching one man in the face multiple times and another man in the ribs during an altercation.

One constable is seen grabbing hold of a man and unleashing a flurry of punches at his face, before another employee steps in between the two.

"I didn’t do anything. I paid my (transit) fare. I didn't do anything," the man is heard saying in the video posted to Facebook.

Less than a minute later, the officer throws a second round of punches.

Eventually, the man is brought to his hands and knees by several constables and arrested.

The video also starts with another officer wrestling with a second man. As the constable attempts to restrain him, he throws a single punch to the man's ribs.

The TTC would not comment on the video Tuesday evening, but the transit authority's spokesman, Brad Ross, said he plans to issue a statement tomorrow.

Ross said that he believes the altercation happened about a month ago at Union Station.

He added that two men were arrested, and the TTC is investigating the circumstances surrounding the incident.

Do you know the men in the video? Contact CTV Toronto at torontodesk@ctv.ca or call 416-384-7100.