Birling Gap beach was evacuated on Sunday [August 27] after people reported breathing difficulties, stinging eyes and vomiting when a "mist" appeared.
Sussex Police said on Monday morning the gas cloud appeared to have cleared.
Agencies are investigating the cause and have not ruled out either on-shore or off-shore locations.
In the past, chemicals have drifted across from European industrial units, but Sussex Police said: "Weather models suggest that an onshore source in northern France is very unlikely."
The Coastguard said it was working with its French counterparts and looking into vessels that were in the area at the time.
East Sussex Fire and Rescue Service said it was "extremely unlikely" the substance involved was chlorine.
First it was a sonic attack on US diplomats in Cuba, now potentially a chemical attack on British beach goers. What gives?
(Score: 2) by Thexalon on Friday September 01 2017, @02:51AM
Quite true. And about 32% of the world's SOBs are Christians, 15% have no religion, 15% are Hindus, and 7% are Buddhists.
That's of course because just about any religious viewpoint has SOBs who adhere to it. Even ones you might not expect: My local Amish community had an elder who was eventually put on trial for him and his crew assaulting and cutting the beards of Amish men who weren't obeying his every command. The only religions that don't have violent SOBs of some kind are those that are absolute pacifists like the Quakers and the Jains, and even they have other ways of being SOBs.
The only thing that stops a bad guy with a compiler is a good guy with a compiler.