A mechanic who raped a Harrow lawyer before strangling her to death has been jailed for life.
Peter Kibisu, 24, was sentenced on Monday (February 1) at the Old Bailey to life imprisonment with a minimum term of 27 years for the murder of 31-year-old Elizabeth Nnyanzi.
He was sentenced to eight years for the rape of Ms Nnyanzi, to run concurrently.
Mr Kibisu attacked the Imperial College graduate and paralegal, who worked at a London firm, on August 14 last year at her home in Harrow.
Punam Chopra, Crown Prosecution Service London reviewing lawyer, said: “Peter Kibisu returned to the home he shared with the victim in the early hours of 14th August.
“He viciously raped and killed her and then sent a text message to her phone suggesting she was still alive. He then callously went to work and on his return called 999, pretending he had just discovered her body.
“He attempted to conceal his involvement in the crime by tooling the backdoor and leaving it ajar and by suggesting to the police it must have been an unknown intruder.
"However, due to the strong case built against him, he was left with no choice but to plead guilty to both offences.
“Kibisu was taken in by the family after being asked to leave previous accommodation and was treated like a cousin by the victim.
"She should have felt safe in her own home, but instead he abused their trust to violently attack her.
“Kibisu has now been brought to justice and I hope this gives some small comfort to Ms Nnyanzi’s family. Our thoughts are with them.”