PASADENA, Texas – The children of a man who died in Pasadena police custody will announce Tuesday that they plan to file a federal lawsuit.

The family, along with its lawyers, addressed the public Tuesday afternoon outside the City of Pasadena Jail .

Mark Oswald, 63, died in police custody after he was arrested June 5, 2015, for public intoxication, attorneys said in a news release.

Cell phone video that was shown to lawyers but not released to the public, showed Oswald slipping and falling. According to the release, Oswald broke his leg and bruised his hip in the fall.

The family said he was left on the floor of his jail cell for hours, begging for help. Oswald could be heard in the video screaming in pain and jail officials laughing at him, telling him that he smelled, the release read.

EMS was called and Oswald was “brutally dragged out of his cell by his underarms” and “thrown onto the stretcher,” the release read. According to the family’s attorneys, video showed that emergency personnel did not examine Oswald’s leg, but paramedics reported that his leg was assessed and appeared to be normal.

He was taken to St. Luke's Medical Center in Pasadena, where he was examined before being flown to Memorial Hermann Hospital, where he died four days later.

The Harris County coroner ruled the cause of death as complications arising from the leg fracture.

"Mark died a grisly death due to the horrible behavior of the Pasadena City jail employees and the EMS," Oswald family lawyer Charles Peckham said. "Somebody needs to account for this preventable tragedy."

Attorneys allege because jail staff and EMS personnel didn't rush him to the hospital immediately it caused a muscle tightening condition called "rhabdomyolysis."

"It causes a breakdown and bleeding in the bone and the rhabdomyolysis causes a breakdown of other organs and that's exactly what happened to Mr. Oswald," said Pekham.

"There is an epidemic of preventable jail deaths caused by inhuman practices of city and county jails," civil rights attorney and Oswald family lawyer Randall Kallinen said. "Something must be done to protect these inmates’ lives."