Police have arrested a second man in connection with the murder of two French students in London.
The only other person arrested, a 21-year-old man, was released yesterday.
Gabriel Ferez and Laurent Bonomo, both 23, were murdered on 29 June.
Their bodies were found after an explosion at Mr Bonomo's ground-floor flat in New Cross, in southeast London.
Mr Ferez and Mr Bonomo were found bound, gagged and covered in hundreds of stab wounds after a prolonged, frenzied attack.
Police yesterday released an E-FIT of a man seen running away from the scene of the murders.
The man is white, aged 30 to 40 and slim. He was wearing a light-coloured baseball cap, dark top, blue jeans and white trainers.
Mr Ferez's parents have appealed for the killer to come forward.
Mr Bonomo was stabbed nearly 200 times, up to 80 of which were inflicted after he was dead. Mr Ferez suffered nearly 50 knife wounds.
Six days earlier, Mr Bonomo disturbed an intruder stealing a laptop computer.