Police, firefighters and health department officials are investigating suspicious devices releasing an irritant on the city's south side.
A spokesman for the Indianapolis Metro Police Department said there are four devices containing some sort of irritant at a house near South Meridian Street and LeGrande Avenue.
Officials said they are pressurized devices in plastic bottles that were thrown out of a home.
Police said the devices have been detonated -- some on their own and some by public safety officers -- and they let off some fumes.
Officials said the devices are not bombs.
Police are still trying to determine who made the devices.
Some neighbors have complained of breathing trouble as a result of the detonation of the devices, police said. At least one police officer was irritated by the fumes, police said.
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