Oxford Street residents will spend another day away from their homes as police and scientists remove dangerous chemicals from a house.
Officers carried out a raid at a property on the street yesterday morning and have arrested a 54-year-old man.
Scientists are working to make safe a number of items through controlled explosion, with residents reporting hearing several blasts since yesterday afternoon.
A police spokesman said: "This morning we will be moving the chemicals which introduces an element of risk, and in order to protect the public and ensure their safety we have evacuated them again.
"The chemicals will be disposed of safely with the support of the EOD and forensic scientists. There is likely to be a series of very small controlled explosions in the area."
Yesterday, around 40 homes were evacuated and residents were instructed to go to Bridlington Spa if they had nowhere else to go.
Spa staff provided free food and drink to those affected as well as giving them free access to a performance on the night.
Resident Blake Nicholson said: "At about 9am we heard knocking on the door - my sister was expecting a parcel for me so she goes to the door, opens it and police are there.
"Obviously we were a bit confused, because they were asking are there people in next door?
"The next thing we know they've got one of the riot things out and they've smashed the door down."
On a blog, the arrested man described himself as a "chemical enthusiast".
Another unnamed neighbour, whose wife called him from their Oxford Street home while he was out, said: “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.”
Neighbour, Carol Small, 61, said: “It’s chaos. “It’s not every day you get someone arrested for having something in their house.” “I think they have over-dramatised it all. I have a cat back home that I need to see to.”
A police spokesman added: "Our primary concern is to keep residents safe. We do understand that it is inconvenient, and will make every effort to resolve the situation as soon as possible.
"We ask local residents to bear with us and to stay away from the area. We will keep them updated directly and on our usual social media channels and our website"
Leaving their homes for the second time this morning, neighbours Maureen and Graham Selby said they were shocked.
Graham said: "You read about these things but you don't expect it to happen to you.
"It's a shock - quite a shock.
"I saw the police outside and all the activity. We we wondering what was going on.
"We were told to leave at about 2pm and we went straight down to the Spa."