The relative, who asked not to be named, said Lawrence had sought bloody revenge on the couple because he blamed them for getting him evicted.
He claimed that the couple told Lawrence's landlord that he smoked cannabis in the property.
They also said the couple had complained about the excessive noise coming from Lawrence's semi-detached home when their children were in bed.
The couple's family said today that they wanted to make it clear that Shane and Laura were "entirely innocent" and just "in the wrong place at the wrong time".
"He had removed part of the dividing wall [in the loft] and cleaned up so nobody would notice.
"We don't know how long ago he had done that or how many times he had been inside their house."
Shane's family, who are from Goole, East Yorks, said Laura is just days away from leaving hospital after making a physical recovery.
The relative said: "About a year ago, the murderer was repeatedly playing loud music while their [Shane's] kids were in bed.
"Shane knocked on the door and the murderer asked him to go around the back and he came out of the house threatening Shane and Laura."
The family member said the couple heard nothing more of the incident for about a year, but recently informed Lawrence's landlord that he was smoking cannabis.
They added: "Then recently, Shane and Laura could smell cannabis in their kids' bedrooms coming from next door and reported him and the murderer was to be evicted for this.
"He told the couple that he blamed them for himself being evicted.
https://www.thesun.co.uk/news/53715...hony-lawrence-loft-creep-shot-neighbour-dead/
