Residents are 'baffled' after a series of large green spots appeared on their road - and nobody knows why.

Multiple colourful dots appeared on Greville Road in in Bristol overnight - with even the council saying they can't currently explain.

One woman said: "No one knows why they are here."

"They have come out of no where - it is safe to say everyone is pretty confused!"

''It looks like the road has got a form of measles.''

The markings range in size from around 30cm to 1.2m wide.

Some locals seem to think the mysterious dots could be part of an art exhibition due to an increase in street art around the area.

Another woman said: "They are colourful and pretty - even though they are out of the blue, I like them."

"It is definitely the kind of thing to happen in Bristol of all places."

One said she thought it was a bid to slow drivers down to 20mph.

But a local man seemed to disagree, arguing the dots "serve no purpose and are extremely unnecessary."

A spokesman for Bristol City Council, said: "We have confirmed that we are investigating where these road markings have come from. "

''We'll keep looking into this in the meantime."