Keiryn Nisbet, 22, allegedly killed Robert Simpson,67, at his property at Mayfield Drive, Armadale, on October 5 2012.
Prosecutors claim Mr Nisbet entered Mr Simpson's flat and repeatedly punched, kicked and stamped on his head and body. Prosecution lawyers also claim Mr Nisbet inflicted blunt force injuries upon Mr Simpson and dragged him across the floor of the house.
The Crown also allege Mr Nisbet attempted to avoid being arrested for the murder of Mr Simpson by washing and cleaning items of clothing that he had worn during the alleged attack.
The claims concerning Mr Nisbet's supposed behaviour were made yesterday during the first day of proceedings against him at the High Court in Edinburgh. Mr Nisbet, a prisoner at HMP Addiewell, denies a total of five charges, including assaulting a woman in a pub in Armadale on October 5 2012, and then murdering Mr Simpson at his flat that same evening.
Mr Nisbet is also charged with damaging Mr Simpson's door and household items. The jury of seven men and eight women also heard Mr Nisbet is charged with behaving in a threatening and abusive manner on October 13 last year, and with attempting to defeat the ends of justice by washing and cleaning clothes he had worn when he allegedly murdered Mr Simpson.
Mr Nisbet's lawyers have lodged special defences, claiming three other people killed Mr Simpson.