Oxford Street residents must leave their homes once again this morning after being allowed to spend the night in their own beds.
More than 40 people were ordered to leave their homes by police, who sealed off Oxford Street and part of Cambridge Street as the operation unfolded.
Officers have now told Oxford Street and some Cambridge Street residents that they are able to return home for the night - but must leave again by 8am this morning.
Police advised residents to go to Bridlington Spa, where they received free food and drink.
A 54-year-old man who lives on the street has been arrested and remains in police custody.
The arrested man had described himself as a "chemical enthusiast" on a website.
A police spokesman said: "A multi-agency gold command group of key emergency services has reviewed the situation ongoing in Oxford Street, Bridlington.
"On the advice from relevant experts and after a carefully considered risk assessment, a cordon imposed today is suspended overnight."
Specialist scientists working at the scene have advised police it is safe for residents to return overnight.
In a message to residents, Humberside Police added: "Scientists will need to continue on Friday, 5 August. This is because there is a risk to your safety while they are actively working in the house.
"As a precaution it will be necessary for us to evacuate houses and prevent access again tomorrow. We are striving to allow all residents to get back to normality as soon as possible.
"Whilst it is difficult to give a specific time when activity will be finished, we will aim for 8pm tomorrow evening.
"We must stress to you that we don’t underestimate the impact of asking people to leave their homes. We would like to reassure you that public safety is our number one concern and it is a necessary decision. The response from the public has been really positive and we’d like to thank you for your cooperation and continued support, and apologise for all the inconvenience caused."
Speaking at Bridlington Spa, resident Carol Small, 61, said: “It’s chaos. It’s not every day you get someone arrested for having something in their house.”
Another Oxford Street resident, who did not want to be named, added: “Initially my wife phoned me to say they were at the entrance to the man’s house with a battering ram.
“They didn’t use it in the end and had quite a quiet entry.
“A few minutes later I saw him handcuffed, coming out of his house. “Then we saw the Scene Of Crime Officers go in and that’s pretty much it.”
They have since praised Spa staff for providing them with free food, drinks and entertainment.
A number of businesses within the police cordon were forced to close, including the Telegraph Pub on Quay Road and takeaway Tower Pizza.
Affected residents with specific concerns and queries are advised to call the East Riding of Yorkshire helpline on 01482 393939.
If you require essential medication please call 111.