A Just Stop Oil protest has taken place around Ipswich town centre.
Environmental activists are taking part in a 'go slow' march across Ipswich.
The group started the protest at Christchurch Mansion this morning.
The group, which is demanding that the government stops all new UK oil and gas projects, adopted the slow march strategy in December, in which traffic is reduced to a crawling pace as protestors walk along roads.
A Just Stop Oil spokesman said that the action is being carried out in defiance of Prime Minister Rishi Sunak's "recent threat to crack down on the 'go slow' marches".
Ahead of the protest, a Suffolk Constabulary spokesman said: “We are aware of a planned ‘go slow’ demonstration by ‘Just Stop Oil’ in Ipswich.
"We’re making appropriate operational arrangements to facilitate a peaceful protest whilst minimising any potential disruption to the public.
“The right to peaceful protest is key part of any democracy while balancing it with the rights of others and keeping the public safe.
"If criminal offences are identified, we will take appropriate action."
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