Reported via Android anonymously at 05:54, Wednesday 8 January 2020
Sent to Cardiff Council 1 minute later
An alarm--type device has been thrown onto the river embankment in this location.
During daytime hours, the sound is largely drowned out by the nearby traffic, but at night it can be heard from nearby flats.
The sound is a low-level buzzing and the device is in among the overgrown plants at this location.
Provide an update