A man has been arrested by police investigating the murder of a woman at a south London office block.
Four people have been arrested in connection with Miss Marlow's death
Catherine Marlow's body was discovered in a shower at offices on South Lambeth Road, Kennington, on 13 January.
A post-mortem examination found the 28-year-old New Zealand-born finance manager had been asphyxiated.
The man, who is in his 30s, was arrested at an address in south London and is due to be questioned by detectives on Saturday.
He is the fourth person to be held in connection with Miss Marlow's killing.
A 26-year-old man has been bailed until 21 February, while Daniel Martin Kennedy, 38, of Dolland House, Newburn Street, Kennington, has been charged with stealing a credit card belonging to the victim.
The day after the murder, a 28-year-old man was arrested but later released without charge.
Police are also trying to trace a "dishevelled and agitated" man who was seen putting Miss Marlow's brown leather handbag into a bin in Vauxhall Street, near the Oval cricket ground, on the afternoon of her murder.