John T. Manning III died Sept. 30

Detectives with the Dover Police Department are investigating the death of a 24-year-old man after he was arrested for shoplifting.

Dover Police Department spokesman Master Cpl. Mark Hoffman said John T. Manning III, of the first block of Edgehill Avenue, had been taken into custody shortly after 11:30 a.m. Wednesday, Sept. 20. following a shoplifting incident at the Walgreens store

According to records released by Justice of the Peace Court No. 7, Dover, a man had been spotted Sept. 19 before taking two cans of compressed air from the Walgreens store at 201 N. Dupont Highway. Manning was identified as the suspect based on store surveillance video and a prior mugshot.

The officer brought Manning to the department’s holding facility at 400 S. Queen St., until he could be processed and arraigned. However, at about 2:03 p.m. Manning was found on a bed in his cell, unresponsive and not breathing.

Officer performed CPR and called emergency medical technicians who took Manning to the Bayhealth Hospital Kent Campus, where he later was pronounced dead.

Hoffman said Chief of Police Marvin Mailey was waiting for the medical examiner’s report from the Delaware Division of Forensic Science and toxicology results before releasing the news of Manning’s death.

“Those still are pending,” Hoffman said. “Once it became obvious the results still were going to take some time, the decision was made to release it today."

Hoffman said Manning did not resist officers during his arrest nor while at police headquarters.

“We never had to use any force on him during the entire encounter,” he said. “He was cooperative through the entire process.”

Officers routinely check a prisoner’s condition every 20 to 30 minutes, and Manning’s condition was discovered during one of those checks, Hoffman said.

Hoffman did not know when the medical examiner will report the cause of death.