A potentially dangerous situation was diffused today at the Detroit Lions minicamp.

The Detroit Free Press reports that an intruder wandered into the outdoor practice at Allen Park headquarters and began shouting obscenities before security escorted him out. 

It's reported the man is middle-aged and got in through an open gate around 12:30p.m.

Among the things he screamed, the man claimed to have invented football. He also shouted about wanting to play linebacker and take the place of "No. 59",Tahir Whitehead.

He was able to get about 40 yards from the practice field, when a public relations staff member stopped him. The man became combative and continued to yell obscenities as security staff got him off the premises.

Police say they are investigating the incident.