FIREARMS officers helped a search team execute a warrant at a home in Hillside Avenue, Worthing, this afternoon.
Detectives and uniformed officers were also present at the search which was part of an ongoing investigation.
Detective Inspector Rob Walker said: “We do not believe there is any threat to the community and residents should not be worried but I would like to thank them for their patience if there is any disruption in the area because of the operation.”
Yasmin Yesilyurt, 21, of Warren Road, and her friend Danielle Smith, 20, of Hillside Avenue, were in the area at the time.
Ms Yesilyurt said: “I have been here for ten years and nothing like this has ever happened.”
There is no further information at present.