Police have been granted more time to question a man who went on the run after two people were killed in separate attacks.
James Allen, 36, was arrested in Leeds on Sunday after he was spotted by an off-duty police officer.
He is being questioned by Cleveland Police following the murder last week of 81-year-old Colin Dunford in Middlesbrough and 50-year-old Julie Davison in Whitby, North Yorkshire.
Allen is being held at a police station in Middlesbrough on suspicion of the two murders and a sexual assault.
Emma Murphy reports on the arrest of James Allen, wanted on suspicion of two murders, after being spotted by an off-duty policeman.
Temporary Detective Chief Superintendent Gordon Lang said James Allen was arrested after an off-duty officer spotted him in South Leeds this morning and urged the public to keep sending in information on the case.
Temporary Detective Chief Superintendent Gordon Lang has urged the public to check on family and friends to make sure "everyone is safe" after the arrest of double murder suspect James Allen.
Temporary Detective Chief Superintendent Gordon Lang said he did not "anticipate any more arrests" in the double murder case.
Temporary Detective Chief Superintendent Gordon Lang has praised the "excellent" police work by an off-duty officer who spotted double murder suspect James Allen in South Leeds.
Mr Lang added that the officer was in a car, observed Allen "for minutes" before calling in help.
Temporary Detective Chief Superintendent Gordon Lang said double murder suspect James Allen was arrested "after a short foot race" in South Leeds this morning.
Mr Lang added that the police are still looking for information.
- Monday April 23: Police find Colin Dunford, who was last seen alive at around 5pm on Sunday, dead with serious head injuries at his terraced house in Middlesbrough.
- Wednesday April 25: Julie Davison, who lived alone, is found dead by her sister at her rented flat in Whitby, North Yorkshire.
- Thursday April 26: Cleveland and North Yorkshire Police issue a joint appeal to find Allen after officers link the two deaths.
- Friday April 27 - Cleveland Police reveal Allen lived next door to Mr Dunford in Leven Street about a year ago.
- Saturday April 28: CCTV images of Allen in Scarborough and Leeds are released. Police confirm he stayed in a bed and breakfast, thought to be the Allerton Croft Hotel in Scarborough, on Wednesday night.
- Sunday April 29: Allen, 36, is arrested in south Leeds at 7.20am and held on suspicion of murder.
A West Yorkshire Police spokesman said Allen was arrested on Crown Point Road after an off-duty officer saw a man fitting his description.