Ineos Grangemouth: Here's why you may here a siren today

The petrochemical giant said it regularly tests its response plans with an exercise taking place this afternoon.

It added that an on-site siren would be sounded and it may be audible elsewhere in the area.

However, they said there was no need for the public to have any concerns.

A social media post from Ineos said: “We regularly test the robustness of our response plans.

"This afternoon (15th) there will be an exercise during which an on-site siren will be sounded.

"This may be audible outside of the site. There is no requirement for any action by members of the public on hearing.”