In April, the county hired Dayton as a fleet manager - a $48,178 job - for the Camden County Police, which replaced the nearly 184-year-old city force in May.
On Tuesday, Dayton allegedly used a police badge and radio and robbed a pedestrian at Ninth Street and Ferry Avenue in the Centerville section shortly before 10:30 a.m. Dayton then fled in a county police department pickup truck, authorities said.
Dayton's job gave him access to police vehicles, authorities said.
The victim reported the robbery to police Tuesday. Officers retrieved video from the city's Eye in the Sky network that authorities said corroborated the story and identified Dayton as a suspect.
"We hold every employee, including civilians, to the highest standards of integrity," County Police Chief Scott Thomson said in a statement.
Dayton's attorney, Timothy J.P. Quinlan of Merchantville, said in an interview that his client - a married father of three - had developed a dependence on painkillers following neck and back surgeries from his injuries.
"This is a tragedy I've seen far too often over the last 20 years when police officers are injured in the line of duty," Quinlan said, "and there is not appropriate pain management for the officer."
He added: "Like many police officers, this guy is honest to the core, and he's not denying that this happened."
Jason Laughlin, a spokesman for the county Prosecutor's Office, said Dayton was not charged with possessing a weapon in Tuesday's robbery.
Law enforcement officials are investigating Dayton's possible involvement in similar incidents over the last week in the city. Laughlin declined to elaborate.
Dayton, charged only in Tuesday's robbery, has been suspended without pay with intent to dismiss from his fleet-manager position.
According to state records, Dayton collects an annual pension of $68,148.
Bill Quinn, a spokesman for the state Department of Treasury, said police and firefighters on disability pensions are permitted to work civilian jobs.
"They are not required to give up their disability pension if they go back to work as long as they are not on active duty," Quinn said, noting that the position cannot include patrols or physical labor.
Under pension rules, workers who abuse their position while engaging in criminal activity can lose part or all of their pension.
Contact Darran Simon at 856-779-3829 or email@example.com, or follow on Twitter @darransimon.
Inquirer staff writer Barbara Boyer contributed to this article.