A hard-working father was bludgeoned to death with a brick by a stranger as he left for work.
Umesh Choudhari, 41, was repeatedly hit over the head with a brick in front of his wife, children and neighbours by a failed asylum seeker with an electronic tag.
Mr Choudhari was working 70 hours a week at two jobs to support his family but now his wife says she will not be able to send their children to university.
Rostam Ahmadi, 23, was bailed to the same street six days earlier, accused of robbery offences, despite objections from police. One of the conditions was an electronic tag, monitoring a curfew in the evenings.
The Old Bailey heard that it was just after 7am when Mr Choudhari kissed his wife and children goodbye to start his shift at a Tesco store. He was starting early to fill in for his manager who was away. Later he was due to go on to his second job as a waiter in a City restaurant.
Mentally ill Ahmadi grabbed him a few feet from his home, pushed him over a wall, grabbed his neck and began screaming at him. Neighbours and family, alerted to Mr Choudhari's screams, saw Ahmadi bring the brick down on his head until two men overpowered him, said Oliver Glasgow, prosecuting at the Old Bailey.
When emergency services arrived on July 6 last year they found the victim covered in blood and being cradled by his wife Rekha in a neighbour's garden in Dennett Road in Croydon, south London.
Six days before, Ahmadi was arrested for following a woman on Mitcham Common, striking her and stealing her mobile. He was bailed by Croydon magistrates court.
Ahmadi was born in Iran and moved to Afghanistan with his family. He arrived in Britain in August 2007 but his asylum application and appeal were turned down in February last year.
He has two previous court appearances. In 2010 he was tagged as part of a rehabilitation order for battery and theft. In April 2011 he was given a supervision order, including a six-month tag, for criminal damage.
Judge Richard Marks sent Ahmadi to a secure hospital under the Mental Health Act and ordered he be detained without limit of time.
He said Ahmadi was suffering from paranoid schizophrenia, undiagnosed at the time, and accepted his guilty plea to manslaughter due to diminished responsibility.
Judge Marks told Ahmadi: "The particular tragedy of these events is compounded by the fact you should not have been in this country in May and July last year."
Mr Choudhari was "a fine, outstanding member of the community and family man".
His family's loss could not be understated. "The pain they have had to endure, is frankly difficult to comprehend," the judge said.
Mr Choudhari's wife, Rehka Shah, said he came to Britain from Nepal in 2003 and took up citizenship in 2008 to give their children a better future.
She said: "He was a friendly person who got on well with everyone. He was popular at work. He was a very hard-working and religious man. I lost my lovely husband and my children lost their lovely father. I feel I will not be able to fund my children's university education."