Jailed: Cannabis-smoking psychopath who bludgeoned girlfriend to death Felipe Lopes, 28, beat lover to death in their flat in south London Anastasia Voykina moved in with him 'because she wanted to help him' He has today been jailed for a minimum of seven years and three months A cannabis smoking psychopath who bludgeoned his Russian lover to death with a hockey stick after a row over a Christmas present was jailed for a minimum of seven years today. Felipe Silva Lopes, 28, battered petite Anastasia Voykina, 23, to death in the flat they shared in Streatham, southwest London. The brutal attack happened just two weeks after he was released from Belmarsh Prison. Following his release from the prison last December 12, a court heard the killer had stopped taking his medication and he was known to regularly smoke cannabis. Despite a requirement to see his mental health team every day he was not seen for around a week over the Christmas period, a court was told. Miss Voykina had moved in with him because she was "idealistic" and wanted to help him overcome his mental health issues. He became increasingly violent and last December an argument flared up about a gift prompting him to knock their Christmas tree down the stairs. Neighbours said the walls were shaking so hard that the whole building was vibrating and the police were called to the flat twice before the killing. On the day of the killing, thought to be around December 29, woke Ms Voykina by pouring cola over her face. He then sexually assaulted her and bludgeoned her with a hockey stick at their maisonette in Streatham, south London. Lopes, who has a string of convictions for domestic violence, was jailed for life with a minimum term of seven years and three months after he admitted manslaughter by diminished responsibility. Judge Richard Marks also made an order under Section 45a of the Mental Health act which means Lopes will be detained in hospital until he is well enough to go to prison. He said: "The ferocity of your sustained attack on your defenceless and naked victim, who was in bed at the time the attack started, is as shocking as it is abhorrent. You are a large man and she was 5ft 2in and seven stone in weight. You bear a significant responsibility for what you did in particular having regard to the fact you ceased taking your medication, knowing what effect that would have on you. Given the ferocity of this killing and your history, in particular non-compliance to medication and use of drugs in the community which adds to your dangerousness, I have no doubt that my primary consideration is the protection of the public. This is best alleviated by my imposing an order under Section 45a coupled with an indeterminate sentence of imprisonment with a discretionary life sentence. Speaking of the requirement for Lopes to have seen his mental health team, prosecutor Zoe Johnson QC said: "No one saw the defendant for a period of days over the holidays." The mental health team returned from leave and were unable to trace him and were about to report him missing. "The evidence suggests that Anastasia lost her life because she was idealistic," Miss Johnson said. She clearly loved the defendant and tried to change him and sadly that cost her her life. In an interview Lopes said a voice had told him to kill Miss Voykina, who was asleep in bed at the time. "He heard a male voice saying "I'm her master," Miss Johnson said. A postmortem examination gave the cause of death as multiple fractures to the face, head and neck caused by blunt trauma. Lopes, who ignored warnings to keep taking his medication and stop smoking cannabis, had been sentenced to 12 weeks in November 2012 for breaching a restraining order by contacting another ex-girlfriend, Petra Kolivoskova. Lopes was released on December 12 with a supervision order to be seen by his mental health team every day. Lopes has a long history of mental illness and had been diagnosed with schizoid defective disorder. Psychiatrist Dr Philip Joseph said Lopes had "marked psychopathic traits." Lopes, a Portuguese national, admitted manslaughter on the grounds of diminished responsibility. He was sentenced to a life sentence with a minimum of seven years and three months together with an order under Section 45a of the Mental Health Act.