Five former Kansas City Chiefs players have filed suit against the team because of head injuries suffered between 1987 and 1993.

The players, Alexander Louis Cooper, Leonard Griffin, Christopher Martin, Joseph Phillips and Kevin Porter claim that they suffered from post-concussion syndrome and latent brain disease, including, Chronic Traumatic Encephalopathy (CTE).

According to the lawsuit, the team directly caused of directly contributed to those symptoms, actively downplayed the seriousness of head injuries and prevented the players from ascertaining their injuries.

The lawsuit claims the team’s negligence directly caused or directly contributed to cause the players to suffer from severe and persistent headaches, post-concussion syndrome, depression, mood swings, explosivity, suicidal ideations, and CTE.

The players claim the Chiefs represented to the plaintiffs that concussions are not a serious injury and that concussions cause no long-term health effects. They go on to state that the team was driven by profit motives “so the plaintiffs would continue to play unimpeded by the risks of latent neurological diseases.”

The plaintiffs are demanding a jury trial, claiming they are entitled to actual and punitive damages in excess of $15,000 for the team’s alleged negligent misrepresentation, fraudulent concealment and for the players’ spouses’ loss of consortium.

The lawsuit was filed in Jackson County Circuit Court.