Detectives have released CCTV images of a man wanted in connection with the murder of a pensioner in Hertfordshire.
Myles Williams was given a life sentence for murdering 20 year-old mother Kirsty Treloar.
A man has been charged with a murder in Mottingham says New Scotland Yard.
Police have charged a man with a murder that took place over three years ago. 19 year-old Jamal Green will appear before Bromley magistrates tomorrow after being arrested on suspicion of killing Nathan Allen in New Cross in 2010.
The former partner of a beauty queen who was stabbed to death in front of her daughter appeared at the Old Bailey today accused of her murder.
David Gikawa, 38, is said to have attacked 29 year-old model Linah Keza at her home in Leyton, east London, last week.
Ms Keza, a former Miss Africa contestant, was found with stab wounds to her chest at the address in King Edward Road in the early hours of July 31.
Gikawa was charged with murder and appeared in court by video link from Belmarsh Prison.
No bail application was made and Judge Richard Marks QC remanded him in custody until another hearing on October 22.
A man charged with the murder of a model who was stabbed to death was remanded in custody today.
David Gikawa, 38, appeared at Thames Magistrates Court in London accused of killing Linah Keza while she was at home with her young daughter on Wednesday.
Ms Keza, 29, was found with stab wounds to her chest at her home in King Edward Road, Leyton, east London, at around 4.30am and was pronounced dead at the scen
The Met Police has charged 38 year-old David Gikawa from North London with the murder of model Linah Keza. She was found dead on Wednesday morning at an address in Leyton.
Hertfordshire Constabulary has charged 55 year old Ian McLoughlin with the murder of Graham Buck in Little Gaddesdenon Saturday, July 13. Mr. Buck had been stabbed to death aftergoing to assist a neighbour who was being robbed.
Ian McLoughlin, who is also charged with robbery and possession of cannabis will appear before Hatfield Remand Court tomorrow.
He was arrested in Tottenham in the early hours of yesterday morning by the Metropolitan Police. The arrest was made following investigations by detectives from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit.
Three further people were also arrested yesterday. Two of those have been charged with assisting an offender.
Three other people were arrested in Tottenham, north London, at the same time as McLoughlin, police said.
The 54-year-old man from Tottenham, 45-year-old woman from Edmonton, north London, and 50-year-old man from Hackney were arrested on suspicion of assisting an offender.
All four are being questioned at Hatfield police station, Hertfordshire Police said.
McLouglin was on day release from Springhill prison in Aylesbury, Buckinghamshire, after being convicted in 1992 and sentenced to life imprisonment for the murder of 56-year-old Peter Halls, from Brighton.
McLoughlin was 22 years into a 25-year sentence, according to police, and was serving his sentence at Springhill.
He was also jailed for manslaughter in 1983 following the death of 49-year-old Len Delgatty, from Stoke Newington, north London. He was sentenced to 10 years for this offence which was later reduced to eight years on appeal.
Police said Mr Buck, who lived two doors away from Mr Cory-Wright, went to help Mr Cory-Wright after hearing shouting in his front garden.
Mr Cory-Wright was jailed for 30 months in 2011 for indecently assaulting a 10-year old boy in the 1970s. Mr Buck, a father-of-three and grandfather, and Mr Cory-Wright are not believed to be connected in any other way than being neighbours.
Detective Chief Superintendent Jeff Hill said Mr Buck, described as a retired financial industry worker, paid the "ultimate price" for intervening during the robbery at the home of an elderly neighbour.
Mr Buck leaves behind a wife, two sons and a daughter, two grandchildren and a former wife.
A man was arrested today over the murder of a pensioner who was stabbed after going to the aid of his neighbour - a convicted paedophile - during a robbery.
After the death of Graham Buck on Saturday, Hertfordshire Police appealed for help in tracing 55-year-old Ian John McLoughlin who they wanted to question in connection with the stabbing.
McLoughlin, also known as Ian John Baker, was arrested in London at around 1am and is being questioned on suspicion of murder and robbery, the force said.
Mr Buck, 66, received fatal stab wounds when he responded to cries from the home of 86-year-old Francis Cory-Wright in the village of Little Gaddesden, near Berkhamsted.
A pensioner who was murdered while apparently trying to help his neighbour has been named by police.
Graham Buck, 66, was found dead in the village of Little Gaddesden, near Berkhamsted in Hertfordshire, on Saturday afternoon.
Hertfordshire Police said that, although formal identification has not taken place, they believe he is Mr Buck - contrary to former reports which named him as Dennis Skinner.