REFORM, Ala. - Former Saints defensive lineman Glenn Foster Jr. died in police custody after he was arrested following a high-speed chase in Alabama.

WWLTV reports Foster, 31, died Monday. The Pickens County Coroner's Office said his cause of death is still pending an autopsy. 

Foster was arrested Saturday on charges of reckless endangerment and resisting arrest by attempt to elude in the town of Reform, Alabama.

Reports said Foster was involved in a high-speed pursuit with Alabama authorities. Foster's family, who said the former football player was diagnosed with bipolar disorder, went with the Reform police chief to bail him out on Sunday. 

“We went to bond him out and something happened at the jail and they wouldn’t let us get him,” Police Chief Richard Black said. “I really don’t know medically what was going on, but based on what I learned, it was not normal.”

Foster had been booked a second time on three counts of simple assault and one count of third-degree battery after he got into a fight with another detainee and two guards. The jail was reportedly holding Foster without bail on those charges when his condition worsened Monday. 

Foster's family said he was taken to a hospital about a half-hour from the jail in a police cruiser. He was pronounced dead upon arrival at medical center, Foster's father told WWLTV.

“They said … once he was stabilized, we would visit our son and go back to normal,” Glenn Foster Sr. said. “However, normal never occurred.”

Foster joined the Saints in 2012 as an undrafted free agent and played in New Orleans for two seasons. More recently, Foster owned a granite countertop business with stores in Baton Rouge and New Orleans. 

The Pickens County Sheriff's Office referred all questions related to the arrest to the Alabama State Bureau of Investigation, which is investigating the incident as an "in-custody death."