Detectives have been granted extra time to question a 32-year-old man who was arrested on suspicion of the murder of landscape architect Joanna Yeates.
The suspect was detained in the early hours of Thursday after police investigating the 25-year-old’s death uncovered fresh evidence.
Specialist search teams then moved into a neighbouring flat in the building where Miss Yeates lived at 44 Canynge Road, Clifton, Bristol.
Dutch engineer Vincent Tabak, 32, is registered as living at the address with his girlfriend Tanja Morson.
An Avon and Somerset Police spokeswoman said: “Police have been granted extra time to question a 32-year-old man arrested on suspicion of the murder of Jo Yeates.”
Police officers were seen at the offices of Tabak’s employer, international consultancy Buro Happold, in Lower Bristol Road, Bath.
The firm, and several colleagues, referred all inquiries to Avon and Somerset Police. The force has not named the suspect in custody.
Workers erected scaffolding and green tarpaulin at the rear of the substantial converted Victorian property in Canynge Road on Thursday.
The screen covers the entrance to flat two, where Mr Tabak lived, and the rear of Miss Yeates’s rented home that she shared with her boyfriend Greg Reardon, 27.
Police sealed off both ends of Canynge Road as officers in white forensic outfits searched the property. The early-morning arrest is believed to have taken place at a converted Victorian terrace house in Aberdeen Road, Clifton.