They're tasked with removing vehicles and objects due to fears of contamination.
Dozens of troops trained in chemical warfare were deployed on the streets of the English city of Salisbury on Friday as part of the investigation into the nerve-agent poisoning of a former Russian spy and his daughter.
Twenty-one people were taken to hospital following the incident but apart from the Skripals only Detective Sergeant Nick Bailey, the first police officer on the scene, is still being treated.
The use of a nerve agent - with its last known use in a targeted attack against the Kim Jong-nam, the estranged brother of North Korea's leader - and Mr Skripal's past have suggested that the Russian state was involved in the attack.
They are in a critical but stable condition in Salisbury District Hospital.
DS Bailey's statement comes as troops descended on Salisbury for a second day, with their focus turning to an ambulance station.
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The Celtics bench stayed hot, dropping 42 points, with Morris leading the way with 17 points (7-15 FG) and five rebounds. Brown was down for an extended period but was able to get up and walk off on his own power.
Skripal was granted refuge in Britain as he worked as a double agent for MI6 while serving as a colonel in Russia's military intelligence service.
A convoy of military vehicles rolled into the auto park at Salisbury District Hospital on Friday to recover a police auto.
Russian Foreign Minister Sergey Lavrov said Moscow was "ready to consider" lending a hand, "whether it's poisoning of some British subjects, whether it's rumours about interference in the USA election campaign".
Officials are still investigating how the nerve agent was administered and lawmakers are probing a possible Kremlin link to the incident.
The spokesman said Johnson's comments were an attempt to politicize the affair, and attacked the media for aiding the United Kingdom government's efforts.
Police have not released details of the nerve agent to the public, but it is believed to have been a rare substance - with some experts identifying it as sarin.
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" Rangers need to win the game and that's the difference, there is a different psychology going into it, in relation to that". However, for the first time since former Liverpool manager Rodgers arrived in Glasgow, Celtic are looking over their shoulder.
Earlier this week, a spokesman for the Russian embassy in London described comments by UK Foreign Secretary Boris Johnson - who vowed a "robust response" in the event that state involvement was proved - as "strongly anti-Russian". Officers were guarding the area where he and his daughter were found, along with a pizza restaurant and a pub they had visited. However, he was delivered to the U.K.in 2010 after a spy swap.
Skripal's daughter is thought to be one of the few members of his immediate family still alive after his wife, Lyudmila, and son Alexander died in recent years.
Suspicion is mounting that Russian Federation carried out the attempt on their lives as an act of revenge against the former intelligence officer, who was convicted in 2006 of selling state secrets to MI6.
Salisbury's MP, John Glen, and Wiltshire Police's Chief Constable Kier Preitchard have both spoken on this issue. however neither were able to give any clear indication on how long the 'heightened' state of security will last.
Mr Seely, who is also a former Soviet Union reporter for The Times, said the investigation needs to be balanced and facts need to be established before fingers are pointed.
A British public inquiry said Litvinenko's murder had probably been approved by Putin and carried out by two Russians, Dmitry Kovtun and Andrei Lugovoy.
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They follow a tumultuous period that saw a major military shake-up and a royal purge, part of a sweeping power play by the prince. Lambeth PalaceThe Crown Prince has faced significant protests over Saudi Arabia's involvement in the conflict in Yemen.
Vladimir Putin, the president, made veiled threats against Russians who spied for foreign powers in 2010 and follows the murder of Alexander Litvinenko, using radioactive material slipped into his tea in 2006.