Knives and swords have been used in two aggravated burglaries in Shoreham and Lancing.
Both burglaries happened within 20 minutes of each other.
Around 11.10pm on Monday (March, 11), three men smashed down the door of a property in Surry Street, Shoreham.
The men threatened the occupants with two samurai swords before assaulting them and taking a mobile phone.
Twenty minutes later, three men matching the same description smashed down the door of a property in Hayley Road, Lancing.
Once again the occupants were threatened with knives and swords before they made off with a cash and a mobile phone.
One of the suspects was described as a white man and the other two were described as black men, all in their early 20s and wearing dark clothes.
Investigating officer, Detective Constable Rebecca Hopkins, said:
“The occupants of the two addresses concerned were thankfully not hurt, but were understandably left shaken, having been confronted by three unknown men brandishing weapons in their own homes.”
Police said they are interested in a blue Volkswagen Caddy van that was seen in the area.
A man was arrested on suspicion of aggravated burglary and possession of an offencive weapon in a public place.
The 40-year-old, from Worthing, was released under investigation.
DC Hopkins added:
“We believe these were both isolated incidents aimed at targeting a particular individual, who is safe.
“We do not believe there is a cause for concern in the wider community.
“We have arrested one person in connection with our investigation, however we are still seeking to identify a further three suspects and we are seeking information regarding the blue van spotted in the area at the time.”
Anyone with any information is asked to report it online or call 101, quoting serial 1624 of 11/03.