Willimantic police said a man was found unresponsive in a jail cell Thursday.
Officials said a man was arrested Wednesday night on felony related charges.
The man was cooperative and was brought to the Willimantic Police Department.
Police said the man was processed and placed into a jail cell.
He was the only one placed in the cell.
Police said the man was found unresponsive in the cell around 3 a.m.
Officials said the Danielson States Attorney's Office and the CT State Police Eastern District Major Crime unit was called in for assistance.
Willimantic police said the investigation was handed over to state police to maintain transparency.
The man's identity has not yet been released. Officials said they express their sympathies to the man's family.
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