Six Denver sheriff's deputies are on restricted duty while authorities investigate an incident at the downtown jail involving an inmate who later died.

Authorities have refused to provide details about what led up to the death of 50-year-old Michael Marshall, who was removed from life support Friday. The Nov. 11 incident happened in an entryway outside the jail pod where Marshall was housed.

He had been arrested Nov. 7 for trespassing and disturbing the peace. His relatives say they're frustrated authorities won't let them view video of the incident.

The case comes a year after jurors awarded $4.65 million to the family of a homeless man who died in the jail in 2010. The department is trying to make sweeping changes after a series of excessive force and misconduct cases.